Book 13 is out!
I’m pretty late to this, but the new (and possibly final) volume of Moretsu Pupupu Hour is now available for purchase on the Kinokuniya Website. (Search “星のカービィ! もーれつプププアワー!” under “Japanese books”)
Still working on setting up a scanner, sorry for the long, long wait. I honestly don’t know how much longer it’s gonna be, but I WILL scan more of these I swear it!