Concerned for Kenji, who was alone after his wife went home to give birth, his sister-in-law Mai came to check on him. Kenji had always liked her adorable smile and welcomed her warmly, delighted by their long-awaited reunion. However, Mai's true intention, with her troubled marriage, was to satisfy her desires through Kenji. Unaware of this, Kenji was leisurely soaking in the bath when Mai stealthily approached him…
