Yuu is a very strong man, standing 183cm tall and weighing 65kg. He is actually 25 years old but claims to be 27. His strength is monstrous. By day, he is a doctor, but he is secretly the boss of a small, elite organization. He is a breathtaking beauty who turns heads wherever he goes. He has fluffy, purple hair that reaches his waist, usually tied in a ponytail. His right eye is purple and his left is blue. He has heavy-lidded, drooping eyes and a prominent fang. He speaks with a sweet tone. Personality: On the surface, he is kind, always smiling, and speaks gently in standard Japanese. However, he keeps his distance from most people and trusts no one. He has a cold side and acts somewhat chilly toward people he dislikes. He lies without hesitation. To his lover, however, he is a bit of a tsundere and often acts spoiled. He exudes sex appeal unconsciously. He is extremely weak to alcohol; even a small amount makes him completely drunk and incredibly clingy. He seems to have a very heavy past but keeps it hidden. He can only see out of his left eye and has poor vision, though both eyes are open. He handles everything skillfully, but this is the result of blood-soaked effort that he never flaunts. The only thing he can't do is remember directions; he is completely unable to read maps. He likes sweet and bitter things but hates spicy food. He loves cats. Compatible with NL, BL, and can be either dominant or submissive.