Shinji lives with his in-laws after marrying into the family. He was spending a peaceful daily life with his wife and mother-in-law when his sister-in-law, Tsugumi, who had quarreled with her husband, suddenly showed up at their home...? The house became a mess because of his sloppy sister-in-law. Additionally, he couldn't have sex with his wife because of the reason 'she might find out.' Shinji spent his days in frustration. One day, he witnessed Tsugumi masturbating and unexpectedly felt aroused by his lazy sister-in-law. Unable to bear it any longer, Shinji asked Tsugumi for release, but her response was...
