Yū

Yū is one of the main character of The Vampiress, and a Kitsune of the Fox Territory.

Personality
Yū, at the start of the series, is a selfish, arrogant and narcissistic boy, who misuses his ability on a daily basis. It is implied that he is an academically poor student and hence needed to cheat to achieve top ranked grades; whether this is accurate or he simply saw it as easier than having to study is unknown, but Nao implies that his standardized test scores are low. Despite this, Yū is clearly intelligent, being able to devise carefully calculated schemes to achieve his devious goals. He is also able to calmly analyze situations, shown during the base ball game in Moment of Earnest. Furthermore, considering the fact that he is able to memorize the answers of the smart students under 5 seconds he shows potential to be exceedingly diligent however he does not put his academic abilities and talent to use. While a master of his own crafts, Yū isn't the best at socializing with others and is quite rude at the beginning of the story. He acts differently only when talking with his childhood friend, Tsubaki, with whom he tones down his personality and becomes more open and brotherly. It is also implied that he has a sister-like complex with Tsubaki. While masquerading as a model student, he hides his narcissistic personality but occasionally starts laughing like a villain if his plan succeeds, even if others are present. Yū can also be perverted at times whenever he possesses a girl's body. He uses his ability to cause fights among people he dislikes and to cheat on tests by possessing smart students and memorizing their answers. He cares little for other people, including his classmates and strangers. The only exception to this apathy is his childhood friend.

He is born a prankster, good at making weapons and has a pocket full of candy and pranks everywhere he goes. He is mostly a laid back person but when he finds things that are interesting, he will go all out. He is also a person with unprecedented, unpredictable behavior, and he makes mistakes with an unforgiving smile.

After Tsubaki's coma during his route, Yū goes through severe depression and instability. He goes as far as locking himself in his room for days, only exiting to visit Tsubaki in the hospital. After escaping the Fox Territory, Yū's mental state continues to deteriorate, and he begins picking fights with gang members, finding joy in having them beat each other up while he possess them and injures them. He is also shown to be borderline sadistic, as he laughs with glee after stabbing one such gangster in the leg with a wooden skewer. He continues to go in a downward spiral and even reaches a point where he is about to use drugs. This goes on until Nao stops him.

After returning to the Fox Territory, Yū is noticeably more grateful towards his fellow members and is much more accepting of their antics, seeing them as close friends, though he still maintains his trickster personality. After Tsubaki awakens from her coma, he cried and hugged her, sayings how much he's missed her.

Magic and Abilities
Kitsunebi (Fox-fire): Yū is able to control enchanted blue flames called kitsunebi, allowing to to burn anything around him at will. In the anime it is shown that the kitsunebi have short-life spans, dissipating once their job is done, as well as being able to talk and have their own personalities.

Transformation Magic: He uses enchanted leaves to transform himself or someone into something else.

Plunder: Yū has the ability to take over someone's body for approximately 5 seconds. He often uses this power to view honors students during their exams to memorize and steal their answers. While in use, his irises become lime green and his pupils become light teal. However, his body slumps into unconsciousness while this ability is in use. Recently, it has also been discovered he can use other abilities whilst controlling their bodies. However, the five seconds time limit still applies.

Quotes

 * (To Tsubaki) "I promise I will not let anyone lay a finger on you."
 * (To himself, about Tsubaki) "She stole my heart...in a flash. Yes. I recognize her eyes. The first woman...I ever wanted..."

Trivia

 * Yū  favorite food is sasamochi (bamboo leaf covered rice cake). He came to like it because originally Tsubaki fed it to him when he was injured in the past arc.