A guy's got complicated feelings for his cousin Kasumi—he's into her romantically, but also sees her as family. He wants to study hard and get into the same school she's aiming for. When he finally confesses his feelings out of nowhere, Kasumi's hesitant at first but then accepts and hugs him back. That moment brings them closer together.
Things get messy when a friend introduces him to adult websites. He starts watching videos and realizes one of the girls featured is Kasumi. From there, everything spirals downward.
Content compiled by AnimeList.moe from publicly available sources.
