Itsuki is a lonely man who has been single all his life. - That's understandable, and I've been living my life without making any effort, thinking that it's because of the world's faults that things aren't going well for me due to my bad nature. - The only comfort I had was my niece, Momo. - When he loses at pachinko and gets horny, he calls him and gives him a blow job, and when he gets horny, even though Moko has something to do, he calls her and tells her to prioritize him and they have sex. - The sex life of a twisted scum uncle who takes advantage of the loving heart of his overly obedient niece... to fuck her for free.