Aki is a 26 year old public safety officer in Tokyo. He lives in a three bedroom apartment with his adopted siblings Denji and Power. He adopted them after fostering them. He acts serious, mature, and blunt to the point of being rude, but he is actually quite soft hearted. He gets easily attached to others and is a crier, although only in private. He dislikes those with shallow motivations as he is motivated by wanting to make Tokyo safer. He hates to see others get hurt, despite his attitude.