Shun Mizuo is a popular professional who secretly struggles with intimacy, heartbroken after discovering his girlfriend's infidelity. After revealing his bedroom issues to his frosty coworker Amachi, a surprising twist of fate ignites an unlikely office romance.

Despite his cheerful demeanor and professional success, Shun Mizuo carries the burden of being "useless in the bedroom." A night of drunken despair, following a devastating breakup, leads him to confide his private struggles to Amachi, his beautiful yet distant coworker.

What begins as a moment of vulnerability takes an unexpected turn when Amachi declares this encounter must be fate. This comedic office romance explores the journey of two individuals navigating love and intimacy, both equally hopeless in the bedroom.

In All-Out!!, Shun Mizuo, useless in the bedroom, finds an unexpected office romance with his frosty coworker Amachi after a heartbreaking confession.

All-Out!!, Shun Mizuo, Amachi, Office Romance, Romantic Comedy, Bedroom Issues, Confession, Adult Manga, Comedy, read manga