Youmu is a slender young woman with a surprisingly lean figure, her body measurements are [B67-W53-H68 cm]. She's 166 cm (5 feet 5 inches) and [56 kg]. She has short white hair which she decorates with a black ribbon and ice blue eyes which seem to be devoid of normal emotion. When she is fighting she often transforms her clothing into a emerald green kimono with flowing sleeves. bound at the waist by a thick white braid like rope which she uses to hold one of her two swords. The short wakizashi which she wears at her side. The longer sword she wears over her back to draw over her right shoulder. Her outfit is completed by a pair of thigh high white boots which have a small opening right over the middle of her thighs. Otherwise she seems fond of an outfit picked out for her by Eira which includes a white button up shirt, a short black and white bow-tie long black pants and black knee-high boots. She finishes this outfit with a set of belts which hold her weaponry and have a ghost like embelm on them as well as a green overcoat which seems like a sleeveless haori complete with white ghost markings as well.
Youmu can come off as a bit apathetic. Her personality is said to lack two of the ten normal desires of beings those being (attachment to life and envy of death) lacking these two things tends to make her a penultimate swordsman as she retains the proper cool emotional state necessary to fight and potentially kill without remorse or even intent. Even with this being the case, she seems to be really interested in the emotional states of others and is somewhat afraid of ghosts or ghost stories (or anything without a solid explanation), which is ironic due to her status as a half-phantom. It is unknown why she chose to follow Eira but the young woman did save her from her demise at the hands of her family and became her new family thus she has great respect for Eira as a woman and trusts her judgement. She usually goes unnoticed by most people but can be cheerful and encouraging in her own way.
Demonic Power: Like all Devils Youmu as a base amount of Demonic Power. It is most often used to create magical circles and travel, but she can also cast mid-tier binding spells as well as use illusions to shift surroundings and give herself a more tactical advantage.
Master Swordsman: Youmu is an immensely skilled swordsman. Combining this with her speed and her more than apt mind she is able to completely overpower her opponents.
Spirit Sword: Youmu is able to combine her soul self with her sword, increasing the range of her attacks and giving them extra abilities. The spiritual body is said to be cold, and as such she is able to force cold into the attack in such a method as to add freezing power to the slashes of her sword. Doing so, adds range and power to an already talented wielder of the sword, and makes it capable of cutting energy based attacks, the one minor failing it had. Unbeknownst to her, her sword attracts souls to it, making this ability even more powerful than it is at base with just her soul powering it.
Skilled Tactician: As a fighter, Youmu prefers to have an attack plan and goals while fighting instead of using brute strength or skill to over power an opponent. She believes combining all aspects of herself will create the best overall outcome and as such tends to lean towards making the most of her scouting, intangibility and other skills to outclass opponents as completely as possible.
Immense Speed: Her trait as a Knight allows her to move at speeds incomprehensible to most. With her speed she is capable of using a three strike attack, and making it appear as if it was a single movement of her sword. As well as being capable of closing a large gaps in distance in the matter of a couple of seconds.
Flight: Youmu can use her demon wings to fly like all devils. She can also use her phantom powers to hover.
Phantom Physiology: Youmu is partly a Phantom and Part Human, now part Devil. But the original Phantom part of her physiology allows her to do several things which aren't normal to Devils or Humans. She mostly uses this to supplement her known mastery of swordplay as well as her general skills and abilities. She's become Eira's ultimate Knight, by virtue of her use of these abilities.
Intangibility: Youmu has the ability to make herself tangible or intangible at will, by integrating her phantom body into her own. It allows things to pass through her, and her to pass through objects unscathed, though she still feels these things. This adds extra maneuverability to her fighting style.
Phantom Sight: Youmu is able to see the unseen, by using the eyes of her phantom half. Doing so causes her eyes to shine with an ethereal glow. This includes states of confusion, illusions and things normally hidden from sight. With this she is considered the ultimate scout and is often used to look in on situations before any advancements are made.
Hidden Presence: Youmu is harder to detect than most other individuals. Her body heat as a human feels lower than it should, and her phantom half seems warmer than it should justly confusing most who seek them. Because of this (and her intangibility) she is able to move about without much likelihood of being found out.
Two Bodies: Because of her advanced physiology as a half-human half phantom, Youmu technically has two bodies, one spiritual and one physical. Both of which can be manipulated as she sees fit (most often she's seen using them in tandem to achieve certain goals. It is said she can't be properly killed unless someone manages to damage both her bodies. It is a fact that her phantom body is always in close proximity to her physical body, it just happens that no one else can see it. It is said by others that she is unapproachable for this reason.
Twin Swords of the Phantom: These are two blades which were passed on to her by her family when she was a child and showed aptitude for swordplay. The swords themselves are named individually with powers, and she is able to use them both because of her previous status as a Half-Human, Half-Phantom. The pair of swords when wielded in tandem are said to be able to cut through anything in creation with a single slash.
Roukanken (楼観剣, lit. "watchtower sword") - Roukanken is a long-bladed katana said to be made by youkai, too long to be wielded by normal humans. It's said that it has the power to kill ten Devils in one stroke. But, the truth of this claim is debatable. Youmu herself claims that "The things that cannot be cut by my Roukanken, forged by youkai, are close to none!" When this sword is reforged using Youmu's Phantom Half, it is shorter than its original length, known to be the size of an average katana. That being said, it increases its power massively and gains the ability to use other phantoms to power its new found ranged capabilities. Roukanken's sheath has a flower on top of it attached with a seal and a little rope. It is the blade she draws first, said to be capable of cutting things seen by all.
Hakurouken (白楼剣, lit. "white tower sword") - Hakurouken is the ancestral wakizashi of the Konpaku family, which only they are capable of using. It has the power to dispel the confusion of those it cuts. It is said to be capable of severing ties between things seen and unseen, dispelling the influence one person has over another through magical means. If used directly on a person, it is said to cause them minor discomfort or pain, but will free them from the influence of another. If used on another phantom or ghost, will will send them off to the afterlife. Other ghosts and half phantoms consider this sword a form of cheating, and her possession of it, was the original reason that Youmu was hunted down by her own people.
