Otonashi-sou na Danshi no Tondemonai Himitsu wo Shite Shimattaおとなしそうな男子のとんでもない秘密を知ってしまった; I've Found Out The Quiet Boy's Shocking Secret; Bí mật của cậu hàng xóm bàn bên

Urai, is a real mystery. The unexpected words and actions of the mysterious boy, Urai, will make you fainter in agony, you can't take your eyes off the gap between the quiet-looking boy! It's the beginning of a sparkling and exciting school life!