woke up to find my colleague mizuki in her underwear next to me! "last night was amazing," mizuki smiles. yuika, who can't remember anything, starts to recall last night's events. the previous night, she was drunk and didn't remember anything, but she was enthusiastically seduced into lesbianism. the next morning, sober and with no memory of the night before, she resists but is seduced into lesbianism again. this two-stage lesbian sex is too stimulating for a non-lesbian! yuika's sensitive body, developed for sexual pleasure, begins to crave lesbian pleasure on its own.
