Matoba Momiji has a boyfriend she loves. His partner is her older boss, Sakura Hibiki. He's cool, kind, and good at his job; he's too perfect for her... They're currently in a long-distance relationship... but Momiji has a problem. (It hasn't even been six months...) After reading a magazine featuring long-distance relationships, Momiji is filled with anxiety and decides to learn "how to seduce a man" from her cousin Kyoya, a lingerie designer. Momiji has him listen to her complaints and learns seriously how to serve a man. She also receives a sample of sexy lingerie designed by her cousin... (Maybe this will interest Sakura...!) She returns home with confidence and lingerie, but for some reason the door is open, and there is Sakura, with cold eyes, unlike her usual kind boyfriend... "You smell like a man." He suddenly pushes her against the wall and kisses her passionately, as if to confirm. (... Something may have happened.) The two head to bed. Just as Kyoya had taught her, Momiji becomes more aggressive in her pursuit of Sakura, but... "Did you cheat on me?" "Naughty girls need to be punished," Sakura changes attitude and pushes Momiji down. She is suspected of cheating and tries to clear up the misunderstanding, but her nipples are stimulated and she cums just from her chest. "If you keep going like this, I'll never be able to cum" "You'll stay inside me the whole time" She is mercilessly stimulated inside in the missionary position, her nipples are flicked and she climaxes over and over again... "I'll never listen to talk of breaking up" A girl troubled by a long-distance relationship wants her boyfriend to feel good, so she becomes aggressive, but he mistakes her for cheating and punishes her with sex.