Plot Summary

The festival sister at the neighbor's house has always been unfriendly and cold, so I'm not good at it. However, my parents are on good terms and my parents will take care of me for a week when I go on a trip! Contrary to her blunt attitude, if there is a chance, she will give me a little bit! You can get drunk and get a filthy girl, or you can sleep together ...! And suddenly notice. Unnie, actually about me ...? Living together with a big-breasted tsundere festival sister who experiences completely subjectively!