Hajime Mukoyama has been secretly in love with Saginomiya Megumi, the most beautiful and untouchable girl in school, for years. Afraid of failure, he turns to his sharp-witted childhood friend Misaki Iohagi, the brilliant president of the Science Club, for advice. Misaki, ever the problem-solver, offers to create a special “HoreKime Drug” — a love potion that amplifies even the tiniest spark of affection into overwhelming passion.

There’s just one catch: the key ingredient is Hajime’s own semen.

Shocked but desperate, Hajime finds himself at the mercy of Misaki’s playful determination as she eagerly reaches for his zipper. What begins as a simple favor quickly spirals into an intimate, awkward, and intensely erotic situation. As the potion takes shape, so do the tangled feelings between Hajime, the unreachable “Takamine no Hana” Megumi, and his mischievous childhood friend.

Filled with blushing embarrassment, scientific seduction, and heartfelt romance, Kime Koi! delivers a perfect mix of comedy, ecchi, and budding polyamorous tension in this steamy upper volume.