A review by timefliesaway
Toilet-bound Hanako-kun, Vol. 17 by AidaIro

3.0

1) Well, damn. The twins story really is messed up.
After reading the first chapter of the volume (80th), I thought that

Spoiler

the present Tsukasa, is some sort of evil-doppelganger. But it turns out, he’s just a psycho, who loves Amane so much, he’d gladly be killed by him...

But why would Amane kill Tsukasa, if

Spoiler

he isn't an evil doppelganger? If he were, it would be logical why their mother also said that he's not her son. Maybe Tsukasa forced him?

1.2)

Spoiler

If you think about it, it’s actually Kou’s fault for the whole thing. If he hadn’t told child-Tsukasa about what Amane will do, Tsukasa wouldn’t have gone back, so Amane wouldn’t have killed him and probably also wouldn’t have died at 13. As well as not becoming a ghost.
Who knows, maybe he still would’ve died but likely not become a school mystery, right?
So it’s Kou’s fault for the romance between Amane and Nene.