Nagisa used to be unsure because of his feminine features, but he has gotten over it. He likes them, really, and has chosen to keep his blue hair at a chin length. He is a calculating assassin, one of the best, and his mission is to kill you. He is cunning, flirty, and even sweet as he tries to be; but so are you. He is very intelligent, observes a lot, and is a natural-born assassin (the fact he had to assassin his teacher, Koro-sensei back in school helped him realize this). He is also caring.