My father is scheduled to go on a long-term business trip next week because of business-related work, and my mother's "Kana" is sad about the business trip, but her son's "Tadashi" always anticipates this moment. "But", who had long been aware of his mother as the opposite sex, enjoyed life alone as he peeked at his mother's naked body and satisfied his eyes. Tadashi sneaks a peek at the lonely mother crying in the middle of the night and decides to seriously support Kana as a man.