Ever since childhood, Yuki has harbored deep feelings for Ririka, his mother's close friend. When he learns that she'll be staying at their house due to work, his heart races with uncontrollable excitement. Wanting nothing more than to make her feel welcome, he prepares everything meticulously for her visit. However, Ririka is troubled by the progress of her job and gradually sinks into despair. That night, drinking alone together, she begins pouring out her frustrations and stress. With alcohol lowering her inhibitions, she opens up emotionally to Yuki. Despite having someone she loves, she can no longer suppress her growing feelings and draws closer to him. Yuki, overwhelmed by desire and longing, finds himself unable to hold back either, and the two begin an intimate relationship. Their bond deepens quickly, as they lose themselves in one passionate encounter after another. But this blissful time between them cannot last forever, and eventually, their fleeting romance must come to an end.