NeonZ
Member
If we operate on the logic that the reveals will have any weight, anyway. Right now I'm pulling for Munakata as Seiko's killer (I didn't even see the post-credits scene until now so I didn't even realize he had her medicine; good thing I saw it lol), Monaca/Miaya as the Great Gozu's killer, and a third yet unknown person responsible for Chisa's death.
Munakata was the one that helped Seiko after Hope's Peak kicked her out though. He wouldn't need to force her to handle him her drugs.