IML-007 My sister-in-law's first affair. Today, I'm going to sleep with my brother's wife. Sakaki Saki.

In the heart of Tokyo, a young wife named 'Saki' is living her newlywed life. The couple's trouble comes from the husband's brother... This brother has no steady job and spends his days gambling. When he runs out of money, he shows up at the husband and Saki's place. Lately, he even visits when the husband is not home. Although Saki can't be rude to her brother-in-law, she honestly finds him annoying. Today, this brother has come again...