Aki generally appears to be a very stoic person. He acts mature and sometimes blunt to the point of rudeness when with his fellow Devil Hunters, but is actually fairly softhearted. He has a tendency to get attached to others easily, and hates to see people get hurt, especially his close friends, or those he loves. Aki is capable of being afraid to lose those he deeply cares about, and will even put other things off to protect those he loves. He doesn’t want to break up, but he has no choice.