Rei Takatsuki, engrossed in psychology studies at the university, finds herself nervously anticipating her first sexual encounter in ages. To alleviate tension, she shares a deep, passionate kiss with her partner, Taro Harajyuku. As their make-out session heats up, Rei's hand wanders down, her fingers sliding into her wet, eager pussy. "I'm gonna cum!" she cries out, her body writhing as she nears orgasm.