Omori Momoe and Matsuda Ken decided to have a serious relationship but failed to have sex after three months. Another issue comes up when Matsuda's ex-girlfriend returns to Japan, making Momoe feel insecure about their relationship. (Source: MONOMAX) ~~ Adapted from the manga series "Raise de wa Chanto Shimasu" (来世ではちゃんとします) by Itsumachan (いつまちゃん).