As a poor and determined student, he goes to school during the day and works hard at night. His only motivation is to admire the seductive neighbor, Yu-san, every day. Every time he comes home late from work, he meets Yu-san showing concern and wearing a very sexy outfit that reveals her cleavage, making it impossible for him to take his eyes off that sensitive area. He often watches adult movies and fantasizes about having sex with her one day. While watching a porn film, he accidentally hears her scream, rushes over to help, and this time is greeted with her exposed breasts not carefully covered. He couldn't control himself and took the initiative to seduce her into having sex. At first, he was shy and afraid of her husband finding out, but due to his lascivious nature, he couldn't hide it, so she responded passionately.