Futsutsukamonono Bokudesuga!

Since ancient times, onmyoji and miko have cooperated in the exorcism of demons. One day, Akito, the descendant of an onmyoji, is summoned by his father to consider an arranged marriage. The potential marriage partner is Rokka, the descendant of a miko.

Chenjin had planned to refuse, but he falls in love at first sight with how cute Rokka is. He almost confesses his feelings to her right there, but they are suddenly attacked by a demon. Chenjin's techniques have no effect on it, but Rokka is able to exorcise the demon in an instant. Perhaps from the impact of the battle, Rokka's clothes are left in tatters. Chenjin looks at Rokka with surprise, because he can see "something" familiar down there in Rokka's crotch...