The name of book is in here Official guide, complete story, walkthrough. This is flashback so maybe that bully guy plays too but doesn't want people to know so maybe when he saw seme has one too that's why he did bully him? And seme knows he will bully him that's why he always read it near him or something like that ┐(‘~`;)┌Lol my English is so bad I want to cry.
http://iweb7.mangapicgallery.com/imgfiles/seishun_kinema/4/024.png
The name of book is in here Official guide, complete story, walkthrough. This is flashback so maybe that bully guy plays too but doesn't want people to know so maybe when he saw seme has one too that's why he did bully him? And seme knows he will bully him that's why he always read it near him or something like that ┐(‘~`;)┌Lol my English is so bad I want to cry.