Yoneda's occupation is a detective. Akita Komachi is the son of a servant in the head family and also a childhood friend of Hikaru. He's a beauty, but his biggest flaw is his nagging personality. Also, a nephew, Souta, joins them together at the office.

V1 - Akuma to Keiyaku
V2 - Akuma to Keiyaku ~Kare no Ijiwaruna Aishi-kata~