@lightingcloud I don't know. Chapter counting isn't exactly a science.
[ul]Volumes 2-4 had beginning chapters that weren't explicit chapters, so that could be three?[/ul][ul]Volumes 2 and 3 had extra chapters at the end, so that's two more?[/ul]
So at best 55 chapters? This is definitely the last chapter though, given that the chapter number is #50 and Futami-sensei gives their farewell at the end. I wish there were more, but...
EditThere's also the possibility that the double-length chapters (chapters 50, 49 and 45, I think) may have been two chapters at some point. Grasping at straws, really...