Lóngxīn/Itsuki

""Oh, you're the shop owner, nice to meet ya! The name is Longxin, but I commonly go by Itsuki, and what's yours?""

- -Longxin/Itsuki meeting Rinnosuke Morichika for the first time

Some Info:
Longxin or more commonly known as Itsuki is the son of Dante, and a technical older brother of all younger youkais in Gensokyo, and is the best friend of Rinnosuke Morichika. He lives at the Moriya Shrine with Kanako Yasaka, Sanae Kochiya, and Suwako Moriya.

Chapter: 0 "The Accidental Creation of The Godson"
Longxin or Itsuki was born during Dante preparations for another war against EXE Nightmare Fandom taking place in 6 years, he started to work with his creative powers and trained his thought of creating anything and he ended up accidentally making a child. Dante was shocked but quickly picked up the child in his arms and instantly thought "Huh, does this mean this is my kid since I made him?" Dante took him back to ?Verse and called Annie, Harry, and Jay and explained the situation, they were happy that they were going to be something like Jay becoming the uncle, and Annie becoming the grandmother. Dante thought that he can have something he can take his mind off the amount of grief and pain he burdens, but as they say. "Good things must come to an end..."

Chapter: 1 "A Sorrowful & Painful Decision"
Three weeks before the war, Dante was putting Itsuki to bed when he suddenly saw the future through his foresight and saw a vision where Itsuki dies due to a blast that the EXE Nightmare Fandom releases, Dante due to his paranoia, started to panic and lose his composure, the thought of his own son dying right in-front was heart-wrenching and he immediately thought of an idea, and quietly grabbed his 6-year old son and teleported to the Gensokyo Human Village, where it was night, Dante cautiously wandered the streets before settling on a house that looked financially healthy, and laid his son on the door in a cradle while shedding tears that were shed when he saw his brother died right in-front, Dante said goodbye to his son, and wiped his memories of himself, and everyone else. As he was about to leave, he decided not to l; leave him completely alone, so he made a telepathic connection with his son so he can always be with him even if he isn't there and knocked on the door, and teleported away.

Chapter: 2 "A New & Terrible Life"
As Itsuki was growing up, Itsuki's family was not as best as Dante seems, his new adoptive father was a complete utter failure of a father, and would abuse him mentally and physically every single day, his adoptive mother loved him with all of her heart but would often cry in her room due to her husband, and little Itsuki could hear and feel bad for her. When he was around 7, he was walking around the market mindlessly and ran into a girl with green hair, her name was Sanae and the two got along and became friends. Every day, he would meet her at the school and play with each other, the two would have this relationship for 5 years and spend all of their time together until that day...

Chapter: 3 "That Day"
W.I.P

Spin:
The Spin is a state of rotation defined by its closeness to perfection, that perfection being the Golden Rectangle (黄金長方形 Ōgon Chōhōkei), more specifically the Golden Spiral that is derived from the Rectangle, a mathematically endless spiral, and a feature said to be omnipresent in the surrounding nature and a fortiori in works of art. Unlike the average rotation, the Spin is persistent and produces more rotational energy than it takes to create. That rotational energy is transferred to nearby objects in the form of vibrations and can be wielded for a wide array of purposes. The Spin is a speciality of the Kingdom of Naples. It is intensively used there either for medicine or for battle. All people who know the Spin are either Neapolitans or have been taught by Neapolitans.

Because of its miraculous property, the Spin has been wielded as a technique by a chosen few at least since the Middle Ages from which several specialized skills have been derived.

Users of the Spin typically try to spin objects to follow as best they can the Golden Rectangle, creating a near endless rotation that may then create an infinite amount of rotational energy, before throwing said objects at a target. To do so, they apply a small force causing the object to Spin near perfectly, giving it an impulse of energy to start the rotation, and then let the rotation perpetuate itself. One piece of advice given to neophytes is to visualize the perfect rotation and then trying to emulate it. To enhance the Spin, one must approach the Golden Rectangle, a rectangle with a proportion equal to the Golden Ratio (approximately 16:9) that when recursively divided into a square and another golden rectangle, traces the path of the Golden Spiral; a self-similar and thus endless spiral. Used as a scale, the Golden Rectangle allows the creation of a perfect rotation and thus an infinite amount of energy.

The Spin is deceptively and relatively easy to learn at the basic, as the novice Itsuki manages to produce a conclusive Spin with a cork within a day of learning about the power's existence; however, it is extremely difficult to master. The Spin must be imbued into a medium that will keep on spinning and must be thrown so the object can transfer the energy through contact. Thus, a Spin user must be able to expertly aim and throw objects in order to hope for a result. One must also know the human body extremely well to exploit the effects of the Spin on people to the fullest. For instance, the Zeppeli Family are trained as surgeons to use the Spin on criminals on death row, otherwise, the Spin may only result in a simple enhancement of destructive energy. Others like the members of Naples' royal guard only use a highly specialized application of the Spin on the human body.

Tusk:
Yes he has a stand. Initially named "Tusk" as it was the first form that Itsuki sees, Tusk ACT1 is the Stand's base form.

Appearance:
ACT1 resembles a small, neotenous animal. Its head is of equal or slightly greater size than its body, and it floats with two short, vague, and inarticulate arms and one such leg. Its posterior is marked somewhat irregularly by small stars, behind which dark circles radiate to their points; while four tendrils droop from the base of its trunk to the approximate length of its leg, bearing heart shapes.

On its head, it bears two long, mammalian ears; small, reflective black eyes, under a brow of a troubling angle; a large star at the top of its forehead, behind which a dark circle radiates to its points, and from the centre of which strong links with the tip of a cone fastened to the region of its nose. Eight wavering vestiges emanate from its head laterally: Two above; four from its sides, the lower of which, at its cheeks, are also surrounded by a dark circle; and one either side of its chin. It was designed with an axolotl in mind, Tusk is primarily pink.

Personality:
Tusk ACT1 possesses sentience separate from Itsuki, as it is the guardian of the Left Arm. It decides to appear to Itsuki and independently help him.

ACT1 occasionally produces the sound "chumimi~in".

Ability:
Despite having a corporeal form, Tusk's power functions as a supernatural ability that Itsuki must use personally to fight like a gunman. Tusk ACT1 is overall quite weak and isn't sufficient to challenge most youkais.

Spinning Nails:
Tusk ACT1 grants Itsuki the ability to imbue his nails with the Spin.

Itsuki can make his fingernails, and later toenails, spin themselves at a high velocity and shoot them like bullets up to 10 meters. The nails have incredible cutting power, capable of slicing through rock, cutting limbs clean off, or carving a tree into a humanoid shape within seconds. However, they do not possess the power to cut through metal. Once Itsuki shoots a fingernail, they take a short time to grow back.

Occasionally, Itsuki lets the nails stay on his fingers. When he puts the nails against the ground, their rotating movement can rapidly carry Itsuki away from his current position. He can also use his nails as short-range cutting weapons.

The spinning nails emit a faint buzzing sound, similar to that of a wasp, according to Sakuya Izayoi & Remilia Scarlet.

Synopsis:
Itsuki walking around the Misty Lake without knowing it and was later attacked by Cirno. Itsuki awakened his Stand Tusk, which enabled him to defeat Cirno and a couple other fairies.

ACT 2:
Tusk ACT2 is the first evolved form of Tusk, accessed when Itsuki makes progress in the technique of the Spin and uses the Golden Rectangle.

Appearance:
Mechanically, ACT2 possesses small, sturdy torso and arms, greater in proportion to its head. From its head hang two barrel-shaped objects. A barrel-like unit the size of its head is suspended at the base of a short, flat spine. Araki added some elements to make it unclear whether it's animal or machine, like a traditional Stand.

Ability:
With an enhanced destructive power and new properties to its nail bullets, Tusk ACT2 is a direct upgrade to ACT1. It allows Itsuki to fare better in combat but limits the number of nails at his disposition.

Golden Rectangle Nails:
Once Itsuki learns to imbue his fingernails with the Spin, in accordance with the Golden Rectangle, it greatly enhances the basic properties of his shots.

When Itsuki activates Tusk, the fingernails now rotate around his fingers like axes. Thus, when he shoots the fingernails, they possess a drilling property, which dramatically increases the power of the shots. For instance, one shot is able to blast away a large zone on impact. On the downside, the nails regrow considerably slower, and as such, Itsuki must save his nails or he will find himself out of ammunition.

In addition to the damage boost, the nail shots gain a new property: after they land, they disappear and leave a bullet hole. These holes created through the rotation can automatically chase after any target designated by Itsuki, leaving a dark trail behind them. When they manage to touch their target, the holes act as though the target was hit by a bullet in the location they touch. The holes shrink and disappear after a while.

When Itsuki shoots a fingernail with aureal rotation, the fingernail takes several minutes to grow back; however, Itsuki discovers that by munching herbs or drinking tea, among others mint or lavender and chamomile, he can accelerate the growing process.

Like with Tusk ACT1, Itsuki can keep the nails spinning around his fingers without actually firing them. He is mostly seen using this for mundane tasks like brushing his teeth, grating mochi and wrapping strings around his fingers. Because of their nature, Yukari Yakumo cannot use her rifts/portals to send the holes into other boundaries. It is explained by Itsuki that the holes are like a gate to a pocket dimension, a endless void or better descripted as a black hole and there isn't anything to send away.

Synopsis:
Itsuki unlocks Tusk ACT2 when Aya showed him about the Golden Rectangle. Aided by his newfound power, Itsuki defeats Yuuta; yet soon after, Lagunas intervenes.

ACT 3:
Tusk ACT3 is the second evolution of Tusk, unlocked when Itsuki when remembering what Eiki Shiki, Yamaxanadu said to him and telling him to find a new resolve in life.

Appearance:
Although it is distinctly more human in shape, its head is still embedded into its body. ACT3 bears sharp spikes growing from both the underside of each of the three toes of its triangular feet and two from small, truncated, disc-shaped hands. On dark, spherical shoulders it bears the large, bold outline of a star; and from its upper lip to the rear of its head runs a tall, blade-like protrusion resembling a Mohawk.

Personality:
Tusk ACT3 doesn't display any noticeable personality trait other than muttering its characteristic "chumim~in" sound.

Ability:
Although functionally identical to Tusk ACT2, Tusk ACT3 involves Itsuki directly exploiting the holes to reposition himself during a battle and increase his options. Tusk ACT3 still possesses all the abilities and limitations of ACT2.

Spatial Wormhole:
By shooting himself with a Spin-imbued fingernail with aureal rotation, Itsuki is able to suck his body into the hole it creates. The hole created by the nail shot, specifically the infinitely small rotating point at the end of the hole, becomes a special space which, due to the infinite proportion of Itsuki's spin, is also infinite and becomes a wormhole through space. A tailpiece theorizes the space as a boundary between dimensions. Itsuki alone can enter that "location" and anything other than him will be cut. This ability is limited by how long the holes can persist in the world.

By moving the hole while his body is inside, Itsuki is able to quickly reposition himself or key parts of him, such as his shooting hands, and attack from unexpected angles. Because the hole functions as a wormhole, anything sent into it will exit through the other end, although it will be severed. This includes enemy attacks. Itsuki deems this ability a new level of mastery over the Spin that even the Zeppeli Family hasn't accessed with their Steel Balls.

Synopsis:
During the fight against Reisen Udongein Inaba, Itsuki, in a moment of deep panic, remembers what Eiki Shiki, Yamaxanadu, which gives him a new resolve that leads to the third form of Tusk.

ACT 4:
Tusk ACT4 is the highest evolution of Tusk, it's main ability can be accessed only when Itsuki uses the Golden Spin.

Appearance:
ACT4 is of humanoid shape and broad or square build; of articulated legs, arms, hands, and fingers. Its head is mounted in the front of its chest, and from the bottom of its chest hangs to its ankles a vestment comprising strings of vertical ellipses. Like Itsuki, it wears a movement shoe on its forehead. The inside of its curtain-like body is hollow, and its face can move around like the Zaku's mono-eye.

Personality:
Occasionally vocalizing ACT1's "chumimi~in", ACT4 punches while inciting Itsuki's expression of the Joestar family's "ORA ORA ORA" Stand Cry.

Ability:
The principle behind Tusk ACT4 derives from the use of the Golden Spin, which requires Itsuki to make his movement run in its "natural state". By doing so, the movement produces rotational energy in the form of the Golden Rectangle and by combining it with Tusk, Itsuki is able to release infinite rotational energy. He can, however, shortcut the process as a last-ditch effort, using a Steel Ball to temporarily his movement.

Tusk ACT4 is thus one of the most powerful Stands in the series due to the infinite energy behind it but is incredibly difficult to deploy as a trade-off.

Otherwise, Tusk ACT4 displays the physical abilities of a close-range Stand and is able to pummel the corrupted human-adaptation of the great dragon god.

Infinite Rotation:
Tusk ACT4 embodies the infinite energy and rotation of the Golden Spin and is able to deploy it in various ways. Following the principle of the Golden Spin, the energy wielded and embodied by Tusk ACT4 is infinite, allowing a wide array of otherwise impossible feats. One of the first abilities displayed by Tusk ACT4 is to be able to break through the dimensional barriers and enter the space in which the target hides in. Moreover, Tusk ACT4 defies all laws of gravity and therefore can move completely influence Sakuya during the stopped time. The damage caused by the rotation is stated to be probably infinite as well. Like with ACT2 and ACT3, the energy of the Spin can persist inside objects even if Itsuki misses a nail shot, and can be redirected toward a target.

If ACT4 touches someone, it imbues the target with an infinite spinning motion. Not only does part of the body separate to spin, everything down to individual cells spin on themselves, greatly distorting the shape of the victim. Eventually, the targets are disintegrated by the rotation and according to Sakuya, sent to another dimension. According to Itsuki, not even a soul will be left behind. The Spin goes on forever and never leaves the person or their Stand, forcing them to return to the place where they were hit or its equivalent in each parallel dimension, thus the corrupted human-adaptation of the great dragon god was not able to escape it despite switching dimensions and/or bodies, always returning to the underground location in which he was hit. If someone uses a tool, like a carriage, to get away from the location, the Spin will imbue itself into the tool and destroy it, forcing the target back into their location. The rotation won't end unless Itsuki shoots the target with a similar rotation that is spinning in the opposite direction, resulting in the two of them canceling each other out.

Tusk ACT4 can also apply the Spin's energy in a more similar fashion to its previous forms and directly open a large space where there was none, as was shown in Itsuki's battle with during which the Stand physically tears open a hole through the ground and enters the sewers with his movement. The Spin is also transferable between objects, as when the corrupted human-adaptation of the great dragon god went to a passing vendor car trying to escape from Tusk; the infinite rotation destroyed the car near-instantaneously and returned to the corrupted human-adaptation of the great dragon god.

Synopsis:
Itsuki unlocks Tusk's fourth and final form after receiving the fifth lesson from his own personal life experience in Gensokyo.

Personal:

 * Master Strategist and Advanced Combat & Situational Intelligence: Itsuki proves himself as a formidable enemy even for youkai’s, being able to use Tusk's abilities to the fullest. Itsuki has always used the terrain and his enemies own power against them, and was intelligent & perceptive enough to quickly deduce Sakuya's space & time power. Itsuki is also a blackbelt at a form of martial arts or combat, being able to take down most people without using his abilities. He can quickly adapt to any situation he may be stuck in and keep his composure even in death or life situations.
 * In-humanlike Marksmanship: When using Tusk, Itsuki proves to possess in-humanlike marksmanship, being able to hit the littlest and the highest speed moving objects, even if firing from odd angles and perspectives, such as shooting all of Sakuya's daggers to prevent being stabbed by them.
 * Charm: This ain't a ability if anyone thinks it is, Itsuki can be very charming, and can make youkai's or human's fall for him easily, even when he doesn't notice.
 * Inhumane Determination: Itsuki was taught this by Suwako due to him being "too friendly" with youkai’s that could easily kill him. Suwako taught him as Itsuki doesn't like hurt or killing people, but after the right amount of training, Itsuki now feels no regrets, no sadness, no conflictions in his mind, and he'll have no problem fatally hurting or killing someone/something when Itsuki is using his Inhumane Determination, his pupils will fill up with a black waving flame. This can be described as an alternate personality for combat or if he is too scared to hurt someone.
 * Godly Whim: When going off a certain desire or state of mind, his desire and state of mind will becomes godly and can't be broken.
 * Advanced Swordsman: Itsuki when visiting Hakugyokurou, would always sword spar with his other best friend Youmu and despite losing every single time, he gained some advanced sword skills and can fight off around waves of fairies with absolute ease.
 * Absolute Accomplish & Will: Once he sets off to do something or a task, that objective and will of finishing that task will become absolute, and cannot be broken by any means. He has a incomprehensible powerful will that can prevent mind control or manipulation, no matter the form, and is stronger than moissanite.
 * Console & Sympathy: One of his most used traits, Itsuki can console or counsel people to feel better or numb the ache, he uses this as a way to help someone and turn them into a friend of his, he consoled and sympathize with Flandere thus making spill everything about her life, and Itsuki helped by making her life way better.

Relationship:
W.I.P