1-3) Zip Up Boy High-school student Kazuki begins a casual sexual relationship with an older man after meeting in a bar. He becomes addicted to the affection but is perplexed by the indifference of his...

Takeshi loses his dream job as a teacher and is ready to jump out the window, but the principal offers him a job at a hot springs which her relatives own. Will this new job turn out better than the old one?

Set in the same setting, this story follows a student who catches Kagitou and Nanase (main characters from the prequel) on the school roof and two girls who end up having a somewhat similar relationship with...