"Just going once and calling it quits? That was way too naive…!!"

A sexy campus life unfolds between a cool and assertive ladies' man and a stubborn, competitive virgin guy!

Riku, Takuma, and Hina have been close childhood friends even into their university years. Riku, secretly in love with Hina, sees Takuma—who has grown into a popular heartthrob—as his rival and frequently challenges him in various competitions to keep Hina from being taken.

But as if to toy with Riku's pure intentions, their battles gradually escalate into kisses and even… handplay. Determined to "finish him off and make him come fast!" Riku throws himself into the fight, but Takuma’s expert moves and relentless tongue work soon overwhelm him. Before Riku knows it, both his body and mind are completely consumed by Takuma…!?