In the middle of the night, the son took care of his stepmother's erectile dysfunction in his father's place while his father was on a business trip

My father is scheduled to go on a long-term business trip next week for trade-related work, and my mother's Kana is very sad because of the business trip, but her son's Tadashi always anticipates the timing. This. But, the person who had long been aware that her mother was of the opposite sex enjoyed her life alone by peeping at her mother's naked body and voyeuristically. Tadashi sneaked a look at his lonely mother crying in the middle of the night and decided to seriously support Kana like a man.