Ch.4: House-husband Satoshi and his "wife" Seiji have been together for 5 years. After hearing rumors Seiji, who is popular with both men and women, is cheating on him, Satoshi decides to spy on and punish him.
Ch.6: Twins Keisuke and Kousuke had always been close. However, when Keisuke was assaulted in place of Kousuke and Kousuke ignored his pleas for help, their relationship was ruined and Kesuke disappeared. 3 years later, they meet again and Keisuke wants revenge
Renzoku Ambivalenz