He Has Never XXX (Yaoi)

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised.
Yukio is a normal salaryman who one day becomes relatives through marriage with his former classmate Hijiri. Now brother-in-laws in a sense, Yukio and Hijiri meet again spend time with each other. But, when they kiss during a drunken moment, they realize they might have a deeper relationship than just friends and brother-in-laws