Added 6 minutes later
and if we take the drink from the previous day, maybe it's Borjomi from Cash's profile) and Drink's cake - it's his guess about his birth... but I don't know, it seems more like it's from paradise, that's why he was protecting Naira) although he could have been protecting her specifically to kill her later, so they wouldn't suspect him, since he was protecting her)) the second suspect is him in general.