Well, that was bound to happen... F best girl Tachibana, too many times someone step on her toes and made her do something against her will, dirtying her hands.
Higuchi made her kill instead him, Totsuka pulled strings behind in the shadows and didn't help with the killing of people and the final chat with her pissed her off.
Tachibana was fed up with the Wolf Game, it was also something she was forced with, something she had to endure through her life and finally snapped, decided to end it all on her own accord, despite knowing it will also end her life...
As for Morii, damn... poor girl... she actually managed to pull though despite being clumsy and blinded by one sided crush on Takigawa who she protected her biological father on...
Then blinded by Totsuka pussy Takigawa betrayed her in the end and kept thinking with his dick, knowing well he was lied to and could be killed at any time since Higuchi the werewolf was also after the same girl.
She deserves all the hugs, not that gruesome kind here, but really tight sweet hugs and a lot of head pats...
That was a nice story, thanks for scanlation till the very end!