>>279967124Yes, it has different scenes throughout, chapter 3 Ooishi ending is different entirely and it completely diverges near the end of s1 (its split into 2 mangas too), shows injection scenes, has a completely different ending and gives Satoko more reasons besides studying and alienation.
All the girls also get way more fanservice with yandere rena faces, satoko thighs and bratty smugness, cute shmions and rika dying horribly