Reiko was struggling with Kobayashi, a student who lived across the street. Cheeky words and deeds for nuisance. If you want to be careful, you may be teased with sexual harassment. Reiko, who is frustrated with Kobayashi, who thinks of him as a nagging old lady and takes an attitude of underestimating him, decides to punish him in his specialty. The way to do that is to dominate with sex... The young Kobayashi is helpless in front of the overwhelming sex mount that makes her smell the body odor of the armpit by toying with adult techniques and charms. In fact, Kobayashi is traumatized by the act of telling Reiko, who was actually a strong sex person, without any way to do it.