Yes I already published this. Explanation down below.
(YN)'s Bio
Name: (YN) Ubyashiki (formerly Tsugikuni)
Race: Human
Gender: Male
Age: 13
Hair Color: Burgundy
Eye Color: Maroon
Affliction: Mato Defense Force; 7th Unit
Occupation: Student; Demon Huner
Combat Style: Sun Breathing
Relatives: Unnamed biological parents; unnamed biological siblings; Haruka's parents (adoptive parents); Unnamed adoptive older brother; Haruka Ubyashiki (adoptive older sister)
Abilities
• Demon Slayer Abilities
Demon Slayer Mark: Like his ancestor Yoriichi, the progenitor of the Demon Slayer Mark, (YN) was born with it, possessing the tremendous physical abilities granted by its effects all throughout his lifespan.
Crimson Nichirin Sword: (YN) is able to turn his Nichirin Sword into a crimson color. When fighting, (YN) can turn his normally black sword bright red at will, allowing him to hamper the enhanced regeneration of monsters.
Transparent World: (YN) has access to the Transparent World since birth, and could use it with incredible proficiency, evident when he could watch for lung expansions and muscle contractions within a person and surmise when to strike them, even as a child.
Selfless State: As he unlocked the Transparent World, (YN) also learned the ability to completely erase his presence like his ancestor did, including all of his fighting spirit. This technique can also mask one's intent to kill and malice, allowing them to fight undetectable against enemies' that rely on sensing one's intention to fight.
• Physical Abilities
Immeasurable Speed & Reflexes: (YN) possesses unparalleled levels of speed that surpass all other characters, including that of Haruka, shown when he was able to dodge every attack that she launched at him and near-fatally injure her with one move, despite the demon's own immeasurable speed and strength.
Immeasurable Stamina & Endurance: (YN), as a seven-year-old child, could run for a whole day without rest; he even remarked that he didn't feel the least bit enervated. His vitality is also beyond peak-human level, being able to survive without food or water for three months when he depressed over being abandoned by his biological family.
Immeasurable Strength: (YN) possesses tremendous levels of physical strength possibly beyond that of nearly all other demon hunters in existence. As a child, he broke through several cement blocks with a wooden sword.
• Supernatural Abilities
Extrasensory Perception: Outside of the sixth sense granted by the Transparent World which allows him to see the inner workings of a person, (YN) also has extremely honed sensory abilities, able to detect things outside the normal range of perception. Like his ancestor Yoriichi, (YN) is be able to discern the aura of demons from humans while also be able to tell the strength of his enemies at a glance. During his first encounter with Haruka, he could immediately tell that she wasn't a bad person. He was also able to accurately sense Haruka's aura, which he described as warm as a warm spring day.
