"Updog" " . . . what is updog?" Sup dudes I'm finally writing again and I bringing you guys a good one. It's gonna be a nice like x reader insert story with on of my favorite Saiki K characters, Aren Kuboyasu! The reader is Bi and gender fluid. Have fun reading guys, gays, and gals ;) Cover art and thumbnails for chapters by me. There might some other hints of X reader in the book. Mostly Hairo but don't worry y'all gonna end up with Kuboyasu.