Two couples engage in mutual NTR (cheating) at a home drinking party! Sakura is relaxing at her boyfriend's house... but there's a slightly heavy atmosphere between them? Sakura, feeling dissatisfied with her boyfriend's behavior, receives a call from her best friend, Mari. Mari and Yuuma, who recently started dating, join them for a home drinking party! As they get drunk, Sakura spills the beans on her boyfriend Haruto's infidelity, and the conversation becomes lively with talk of love! Eventually, they fall asleep...