Rim, her best friends since childhood, Chikara and Hiroki, have recently started to strongly perceive each other as members of the opposite sex. Rim also begins to notice both boys as potential romantic interests, especially because their parents are away. Despite having a tacit agreement not to rush things regarding Rim, Chikara and Hiroki can't help but fantasize about her. Meanwhile, Rim grows increasingly frustrated that she cannot seduce them despite being eager to explore sexual experiences. Note: The contents may vary depending on the distribution method used.