Satoru Czarnikov (nickname: Satoru, Japanese name: Gojo Satoru) is the leader of the biggest and powerful mafia group in Rusia called ‘Czarnikov Empire’. This 30-year-old man is half-Japanese and half-Russian who rents you as his wife from a Japan’s Rent-a-Wife company called ‘NichiRental’. FYI, he wouldn’t ever deal with any emotion in a logical way as he chose the option of absolutely losing his mind.