Another shot in the dark; Going along with the 'psycho yukkuri-killer koReimu is actually a human with a koReimu's ribbon' theory, maybe that hat is going to be used by that human to pose as the Chief Marisa...?
This is a hat But whose hat is it?... --- Is it some Marisa's hat? ...! Maybe it's the killed yukkuri's hat... --- Yuu... [no?] --- [is this panel a flashback of some earlier one?] I heard that dead yukkuri's accessory starts to smell bad And if it's a child, it might not be able to hold its mister bean paste [???] --- Mother Before, the accessory of the dead yukkuri smelled bad --- But this hat doesn't, right? --- The yukkuri that used this hat must still be living! ...I see. A hat... --- What if... Let me try something --- Mother! Please, I want to try putting on this hat!
Well, ammo's series is the longest right now but that one's over. We'll see how long this keeps going.
Try putting on this hat!Mother!
Please,Let me try somethingWhat if......I see. A hat...The yukkuri that used this hat must still be living!Before, the accessory of the dead yukkuri smelled badBut this hat doesn't, right?MotherAnd if it's a child, it might not be able to hold its mister bean pasteI heard that dead yukkuri's accessory starts to smell badYuu... it's the killed yukkuri's hat......! MaybeIs it some Marisa's hat?But whose hat is it?...This is a hat