"Mom, let me help you break him in...! For the sake of our new family!" Hikari, a mother who remarried, is troubled by a marital problem: her pussy is so tight that their nighttime activities aren't going well. Her son, Takuya, can't stand to see her like this, so he suggests using his own penis to break her in! "I want a little brother or sister. I'm serious about it!" Takuya pleads so earnestly that Hikari finally gives in, and the couple...