I forgotten the name of the character in this bit of japanese lore where the japanese version of the santa that seeks out bad children.. curse my fragmented memory!
(edit)
Namahage.. The house invading Oni. After googling some keywords I found it.

This makes sense for it to be these two. Parents "bribe" the house invading Oni with liquor and promising them their kids will behave for the next year.

I think that might be Cirno in the bag. It's hard to read but I think the hand is writing "atai" which is a little weird, as I thought that trope was supposed to be them writing their killers' names.