- The ultimate pleasure that a mother and son who are caught in forbidden incest can no longer be satisfied with the sex they do with Oma ○ Ko! It's anal sex! - The second in a series that includes 6 barrages of anal sex between metamorphosis parents and children who are not satisfied with normal sex, and is presented to anal sex fans! - Once you know the pleasure of being inserted into the anus, you can't with Oma ○ anymore!