One day, our troubled protagonist accidentally wandered into the neighbor's room, overwhelmed by his worries. With the caring support of a gentle older sister figure, he opened up about his troubles Specifically, the difficulty he was having sex with his girlfriend…
The male protagonist is into the female lead but can't muster the courage to speak up. After finally managing to set up a date with her at an izakaya, he still can't find the bravery to confess. Unable to bear it any longer, the female lead, Mizuki, suggesting they go a sex club together?!