[@Dead Cruiser]
Whoops, internet glitched and made me double-post.
You know what? I'll make use of this accident to post an edited (and hopefully final) version of the CS. The main changes will be additions of initial nerf details to her Mastery and Ephemera sections. Everything else should be the same aside from her first title.

[hider=Jen - Overclock]
[color=00aeef]Name[/color]:
Jen Shiragami

[color=00aeef]Titles[/color]:
Overclock, Fastest Woman Alive, Bane of the Heaven Seeker, The Deathlight, Vanquisher of the Unspoken, The Hero Who Never Was

[color=00aeef]Age[/color]:
21 physically... and a fair bit older mentally if one considers her living extended periods with an accelerated mind.

[color=00aeef]World[/color]:
Earth Q is an Earth variant world once reduced to a post-apocalyptic wasteland by decades-long war with a Wuxia-style Invader, were it not for Jen's final heroic act during her ascension restoring it to a golden age of relative peace. Magic and supernatural abilities are a fairly new phenomenon on this world, barely 30 years old, and are thus poorly understood and with shaky foundations for training.

[color=00aeef]Race[/color]:
A black-souled/Perceiver human(?), Jen developed from her youth a natural and intuitive connection to the forces of Speed. By all accounts she is otherwise a bog-standard human woman of Japanese descent... at least on the surface.

[color=00aeef]Form[/color]:
Jen appears as a young human woman of what could be described as be Japanese heritage. As a result of her ascension, this appearance is more a thin veneer than anything. Having been forced to cast aside her mortal form in truth, the illusion falters when she uses her powers to any real degree, revealing a semi-ethereal blue humanoid being that appears to be more a living, moving galaxy than anything else.
[hider=Nexus Form]
[img]https://i.imgur.com/p1oslsS.png?4[/img]
[/hider]

[color=00aeef]Legend[/color]:
Jen's world was woefully unprepared for an invader with the bullshit of a Wuxia protagonist behind them. A war of decimation with the goal of godhood was waged against her world, and Jen from the age of 11 found herself participating. The war went on for a full decade from her joining, and Jen's power over Speed was cultivated and mastered in that time, her personally confronting the Invader many a time and often being the only thing between her world and annihilation. She in many ways became the face of the resistance, and her very presence tended to at least guarantee that the enemy could not win outright.

Widely hailed as humanity's savior, she was a one-woman army, known to slay and save thousands in the blink of an eye, entire armies liberated or laid to waste at her leisure. Rumor said that should one have a way by which she may hear them and so much as call her name, she could cross the ocean to aid the besieged before the words ceased to flow. Her final battle with the Invader would see her finally initiating a last desperate stage of her personal cultivation, resulting in her victory, along with her ascension and removal from the entirety of her world's memory and history.

[color=00aeef]Will[/color]:
Jen dedicated herself to heroism and war from a young age. Time and again she has fought for the sole purpose of saving lives and opposing an unparalleled tyrant of a madman. Despite having finally defeated said tyrant once and for all, she cannot lay such instincts completely to rest. That said, facing a new world with new people and evils, Jen can only feel a looming sense of... exhaustion. Having sacrificed everything for her world and spent half her life at war, Jen now desires to try living for herself for a change, to seek personal peace instead of peace for the sake of others. To that end, she intends to explore the new limits of her existence/body and [i]shatter[/i] them all over again, to cast down any threat to her peace, and to finally have what she always reserved for others... hopefully without compromising her moral compass... much. It's time for the selfless hero to be a bit selfish for once.

[color=00aeef]Mastery[/color]:
Jen has long cultivated a natural intuition for manipulating the primal forces of Speed, to a degree that steps even into the realm of space-time. Her mastery has seen her surpass even the speed of light and the flow of time itself, and her ascension has seen the obtainment of near-immortality through the stark transformation of her body to one more akin to an elemental of Speed than anything else.
Broadly speaking, if one can so much as conceptualize a usage of speed, it's fair to assume she can make it happen -or figure it out if not; she is basically a living embodiment of Speed.
However, her mastery is very much White Arts focused. Red Arts are comparatively unexplored territory for her. And as a result of the Void's rather unstable and unfamiliar rules of reality, she has found herself in the position of being nearly a complete novice at Red arts once more, unable to properly perform time travel or techniques akin to safely moving other people at her higher speeds.

[color=00aeef]Ascent[/color]:
When faced with the genocidal ascension to godhood of the Invader that had long terrorized her world, Jen was forced to finally attempt time travel. In order to prevent a worldwide paradox and ensure success, she exploited her time-space manipulation through her mastery of Speed to sacrifice her own past/history. As a result, her body began to unravel from the self-contained paradox, and she was forced to craft a new shell of a body from the fundament of Speed around her while she reversed time.

In short, she successfully reversed time by more than a decade and assassinated the Invader in the moment they entered her world. However, her not yet completely stable form interacted with the forces laid bare by the Invader's dimensional technique, causing Jen to lose her grip on her world's timeline. Fumbling to stabilize her form, she began to Ascend, as she managed to work a solution together using her accelerated reaction time. Her form solidified, and a force like a sun being birthed within her propelled her uncontrollably forth into the next adventure.
[hider=More Detailed Version]
During the Wuxia Invader's ascension ritual, a genocidal sacrifice was initiated, wiping out a large portion of the planet's population and ensuring the Invader's ultimate victory. Instead of allowing such an atrocity to pass, Jen was forced to use time travel. She was wary of causing a paradox, but it was the only thing she had left, and she had a theory about how she could make it work.

Speed of light remains constant irrespective of the observer. It is observed that as the speed of an object increases, time slows down. At the speed of light, time stops. And on further increment of speed greater than light, time reverses. Thus, to travel back in time we have to move faster than Light. And Jen's personal step: sacrifice her own timeline to ensure that her appearance in the past would not cause a paradox.

She didn't just erase the battle, the [i]defeat[/i]. She reversed time all the way back to the exact moment the Wuxia Invader had arrived in her world years ago. As she did so, the disappearance of her very past caused her body to begin to come apart at the seams. In order to retain cohesion, she infused herself with the very concept of speed that flowed more freely around her now than ever before, crafting a new body from the fundament of the universe, a part of her mortality inextricably cast away to achieve a stable existence outside her own timeline.

She found the moment of the Invader's entry and attacked him with every bit of her fully cultivated power against his less experienced past self, a merciless barrage of high-speed vibrating attacks that reduced him forever to mere atoms. However, the Invader had still been resolving the effects of his dimensional technique when she struck. The combination of such a technique imploding and Jen's own state of still-resolving ascension and weakened grasp on her world's timeline caused her to be nicked by the collapsing technique and thrust from her world entirely, as her ascension solidified and completed in truth.

Arriving in a place unknown, she found that her very being had been fundamentally changed by the experience. In order to maintain her existence, she had not merely joined herself to the concept of Speed. No, for to join herself with her own universe's rules of reality would have resulted in her unraveling the moment she left. Instead, she had managed to transform herself into a sort of moving "universe of Speed" in the shape of a human. Her very being was a self-sustaining battery of an existence that molded and adapted itself to instead be fueled merely by Jen's own belief and perception of Speed.
[/hider]
[color=00aeef]Ephemera[/color]:
[b]The Speed Nexus (Beta Stage)[/b]:
During her ascension, Jen's body was ripped apart by her own paradox, and she was forced to craft a new one from the fundament of Speed to act as a shell/shield for her memories and soul, becoming something akin to an "elemental" of speed. Her body appears to be relatively self-sustaining and capable of generating its own mana, but the majority of the mana seems to be devoted to its current stabilization/evolution process. As a result, Jen is currently decidedly weaker than her prime and must be far more careful about when and how she expends her limited -but slowly growing- undevoted mana reserves. 

As a result of its inorganic nature, this body is no longer is capable of aging normally. Nor does it require food, drink or air. The body is barely any more durable than a standard human's. This will likely change in time, as it grows in power and "density".

[b]The Speed Nexus[/b]: 
The eventual evolution of Jen's body.
A self-sustaining existence within Jen's body of her own semi-unintentional creation. More accurately, her body is the nexus itself, a relatively tiny but growing and hyper-compressed "Universe of Speed" that acts as a protective shell/shield for her memories and soul to guard against the paradox that destroyed her original body. Through this and her own perception of her power, her body has become essentially a walking physical expression of the fundamental force of Speed. This body is a magical nuclear power plant, constantly utilizing the forces of its own existence to generate and store further power, which is partially put towards generation, escalating the speed at which it generates more ad infinitum.

This body doesn't possess an organic growth cycle and as a result is no longer is capable of aging. Nor does it require food, drink or air. However, the body is barely any more durable than a standard human's. This will likely change in time, as it grows in power and "density".

[b]Loyal Fol-... Frien-... Honestly, it's a cult[/b]:
As a result of erasing her own history/past, very few from her home-world recall her existence, and she has been relegated more to myth than anything. That said, she is not the only being that can step beyond the reach of time, and several that remember cultivate her (presently false) image as a Goddess and search for ways to contact her or bring her home.

[color=00aeef]Theme[/color]:
[hider=Main Theme]
[youtube]https://www.youtube.com/watch?v=oj_qjHOaVNI[/youtube]
[/hider]
[hider=Final Battle With the Wuxia Invader]
[youtube]https://www.youtube.com/watch?v=ZYAPgPH9hsI[/youtube]
[/hider]
[hider=To Pierce the Barrier of Time (Jen's Ascension)]
[youtube]https://www.youtube.com/watch?v=ZFtlMX-7cI4[/youtube]
[/hider]
[/hider]