Underage, parental figure/child demi-incest. Kami-sama Konoe raises Kotonha, a kotodama user so powerful he is not allowed to speak. This one is the biggest homage to/parody of Fruits Basket since Kon/Raizou -- Kotonha is locked in a single room, restrained, subject to mysterious and inviolable restraints. His clinging to Konoe and Konoe's fierce dedication to him are ♥ ♥ ♥
Oh, I am going to the special hell.