Mai-chan is a bright and energetic third-year junior high girl, a member of the kendo club. As the eldest of three sisters at home, she's developed an addiction to masturbation. She loves facials and has a sexy personality, often shouting "I'm totally defeated by you guys!" at the peak of orgasm. With a 144/86 (E) 62/86 figure, her A blood type adds to her charming mix of innocence and hidden eroticism.
Nami-chan is also a third-year student who looks composed and mature, but in reality struggles with physical activities. During masturbation, however, she becomes wildly vocal, screaming loudly things like "Aaahh! Hii!" and "I want money so bad!" as she experiences intense orgasms from the vibrator, constantly expressing her erotic side. Standing 177/81 (C) 63/88, her B blood type personality gives her an unexpectedly alluring appeal.
Their erotic daily lives intersect in a story filled with moments of self-pleasure. Depicted are days spent studying while repeatedly masturbating, their obsession with facials, and the evolving dynamics between them. A compelling blend of eroticism and innocence that captivates the audience.