Natsuki Minami and Shiraishi Rin turn into an orgy at the after-party of the coming-of-age ceremony and have raw creampie

A man and a woman (Minami Natsuki, Rin Shiraishi) who are allowed to drink alcohol at a private after-party get extremely drunk, develop into an orgy, and end up in a lawless zone where they have raw sex and creampie lol