FIreafy. Just full on wholesome. :D (Maybe) ;]

The Babysitter AU takes place during Season 3 of BFDI (IDFB), where book and pin take turns babysitting Penny, the younger sister of their partners. Pin is dating Coiny, and book is with nickel. Coiny and nickel are penny's older brothers. Pin and Book rarely, if ever, babysit together. The reason? They don't get along. Especially pin, who can barely stand book. They clash on almost everything, so the brothers came up with a system: Book babysits penny one week, and pin takes over the next. Penny's best friend is Firey Jr., who often visits when she's being babysat. But one day, something unexpected happens, both Coiny and Nickel **intentionally** schedule Book and Pin to babysit at the same time. not by accident, but as a sneaky plan to get them to finally cooperate and get a long. What happens when two rivals are forced to work together? That's where things start to get interesting.. Side note: In this AU, Firey Jr. is a girl, Penny is a added oc that's the little sister of Coiny and Nickel, and its all humanized!