Ito, a quiet, inconspicuous literature girl in her class, is a fujoshi otaku whose hobby is fantasizing about yuri pairings among her female classmates. Her favorite pairing is "Mizurika" (a name she gave them), the childhood couple of Mizuki and Rika, and she would get ecstatic watching them fool around. While this was just Ito's fantasy hobby, one day, while stalking the two around school as usual, she witnesses Mizuki and Rika kissing... and before she knows it, she's sandwiched between the two beautiful girls she admires! A dream lesbian harem where fantasy becomes reality!

Emi, an office worker feeling at her limit from work exhaustion, encounters Rika, a runaway girl standing alone with nowhere to go on her way back from the office. Thinking Rika was in danger when she said "I'll do anything if you let me stay," and being naturally protective, Emi decides to take her in out of concern. However, upon bringing her home, Rika accidentally discovers that Emi is a lesbian... "You can do whatever you want with my body as thanks for letting me stay." Facing Rika's sweet temptation, Emi, though knowing it's wrong, gradually loses her reason and ends up passionately desiring her beautiful body...

The two beautiful, hairless actresses, Yui Tenma and Rika Yumeri, cross the boundary of their roles as a senior and junior, sinking into the swamp of lesbian pleasure. Hearing her cute junior talk about her boyfriend, the Yui, burning with jealousy, attacks her and leaves her completely wrecked with erotic caresses and mean verbal attacks until she climaxes. Invited by the beautiful, hairless pussy of her junior, Yui spreads her ass wide and licks her anus all over, finally making her wet herself on the sofa. Realizing the wonders of being a woman, Rika recalls the cunnilingus Yui gave her and puts it into practice, successfully making her cum. With their soft skin touching, the two women became addicted to the endless pleasure of mutual affection, even setting aside their boyfriends. Licking each other's sensitive anuses and moaning wildly, becoming one with a double-headed dildo to share pleasure all the way to their wombs, the two women became one and could never be separated again.

Rika has admired her cousin Mao like an older sister ever since they were children. As she grows older, Rika begins to confide in Mao about things she cannot discuss with her parents. Mao, who came out at eighteen, now enjoys her romantic and sexual life openly with other women. Watching her, Rika feels a mix of envy and fascination, and gradually starts to see Mao as someone far more special than before.