Volume 25 is a candid private-sex documentary following four shy, secretly kinky adult amateurs found through dating apps and social media. Megu, 24, masturbates twice a day and drinks before the meeting because she is so nervous, then admits she wants to explore kinky sex. Yurimi, 21, has only had one partner and secretly meets behind her live-in boyfriend’s back, hoping to experience her first vaginal orgasm. Yuu, 21, can barely make eye contact, but after drinking she reveals her fantasy of being fucked by a man and shyly initiates a kiss. Ako, 22, cosplays alone while masturbating and fantasizes about bondage; overwhelmed by pleasure, she cannot stop wetting herself. Squirting, facials, cosplay, one-night hookups, and their uncensored emotions fill this installment.