Matching App Invited By Mom's Friend To Sweetly Tame 'guess-younger' Together. Marina Shiraishi

Close mom friends Marina and Rena. One day, during their usual tea party, the conversation turns to their sex lives. Rena seems to be having a fulfilling sex life with a young guy she met on an app, and she half-forces the shy Marina to try the app too, saying "Just once"... The student Shinji, whom she meets through the app she started using, is an obedient, honest, and cute boy. Awakening to the pleasure of dominating someone younger, Marina gradually, little by little, lets both her heart and body drown in the dangerous game with the younger man.