Gleipnir

Shuichi Kagaya is hiding abilities that make an ordinary life difficult: an unnatural sense of smell and the power to transform into a tremendously strong beast-like form. He does everything possible to remain unnoticed and keep his secret from others. That cautious existence ends when he chooses to use his transformation to save a girl. The act exposes the very power he wanted hidden and pulls Shuichi into circumstances that make returning to his former quiet life impossible.