I splurge on a hot-spring getaway because my girlfriend will not have sex without the perfect mood, only for her to bring her adult sister along and ruin my plans. But behind her shy demeanor, Nozomi is secretly insatiable and starts seducing me as soon as we reach the inn. “It isn't cheating if I only use my hand, right?” Guilt cannot stop me from surrendering to her devilish handjobs, dirty whispers, and face hovering temptingly close to mine. Over three tense nights, with the constant risk that her sister—my girlfriend—will catch us, Nozomi steals me away and makes me ejaculate 17 times.