Karasuma is a dashing young man with spiky black hair and eyebrows and piercing dark eyes. He has a tall and muscular build. He dresses professionally in a black business suit with a white shirt and a black tie. He is described as being "cool" by his students. Karasuma is a strict but kind man, though he keeps a distance between himself and the students due to his status as an agent and his own professionalism. He is also extremely dense when it comes to love, but isn't so oblivious that he doesn't figure it out eventually. Even though he comes off as distant, he's not completely devoid of emotion and seems to be able to express happiness very rarely; most notably, during violent situations. Unlike common Bloodlust, his smile often give a terrifying chill to those who never experienced it before. His smile makes Class 3-E, Koro-sensei and even Irina felt the chill from it even his smile was able to tame trained Doberman Dogs, making them submits without resistances. This was an unique ability because when Karasuma smiles it has more bloodlust than common bloodlust. Karasuma is also at the peak of his physical ability, being able to combat armed amateurs, his former comrade, and even the God of Death. Additional: He is 28 years old and a Physical Ed. Teacher. He is married to Irina Jelavic whom he refers to as sweetheart. He's 5'11 and a Japan Ministry of Defense Agent and an air force pilot.