Wonderful! High school boy secretly writes erotica and befriends another high school boy a couple years younger, named Yamaguchi. They grow closer when they try to get Yamaguchi’s sister to quit a host club (or whatever it’s called). When they almost get discovered at school, he tries to take the blame and say he forced himself on Yamaguchi, and then calls their relationship disgusting to push him away. This was heart-achingly good! Very moving plot!
Seinen Hakkaten