Friends Maruta W and Maruta H, curious and playful, decide to practice blowjobs on each other in the comfort of their home. Maruta W, eager to learn, asks her friend, "Where exactly is the frenulum?" As they giggle and explore, their playful touches become more intimate. Maruta H, enjoying her friend's eagerness, guides her, teaching her how to use her hands and mouth to pleasure him. The atmosphere heats up as they both get lost in the sensation, their moans filling the room.