Of course, the majorette doesn't know how to please her pussy anymore - she's had this and she's had that. Now she's getting to the driver. Only she doesn't feel anything for him, so she uses him as a free phallus. But he fucked her asshole hard to get even for the part she intended for him. Let her mouth serve as an asshole to go down in!
Till the end it's not clear, is it a comedy, a thriller or just a specific Japanese porn, with a weirdo hero. But it is interesting to watch. Especially surprised by the large breasts of a stranger, I thought the Japanese do not have these.