Kamiki-san is a quiet and down-to-earth person at work. A co-worker who ended up dating due to his girlfriend's strong push. The man is a virgin and is always excited about his first girlfriend. One day during their date, he gets caught in a torrential downpour and ends up taking shelter at his girlfriend's house. When she took off her wet jacket, it was discovered that she had hidden big breasts! My crotch shows an honest reaction while I'm having trouble deciding where to look!