Sekai Ichi Hatsukoi: The World's Greatest First Love

Believing Yukina has cheated on him, Kisa becomes distracted at work and won't respond to Yukina's messages. Accidentally answering one of Yukina's calls, Kisa tells him their relationship is over. That night, Kisa reflects on Yukina and realizes he knows little about him as their time together was mostly spent having sex. Kisa receives a call from an old boyfriend and agrees to hook up with him since he's no longer seeing anyone. The man arrives and just as he and Kisa start to kiss, Yukina appears, slaps Kisa's face and tells the other man to leave. Inside Kisa's ...