During repair work at her apartment, a young apprentice craftsman comes to her home. He makes mistakes on the job and is scolded harshly by the intimidating foreman, yet his earnest, hardworking attitude deeply impresses Miho. She watches him with a gentle smile. One day, heading to her bedroom, she discovers him passionately masturbating while sniffing her underwear, leaving Miho shocked and flustered. In that moment, his pure emotions and innocent appearance stir something deep within her heart.