Two people who are in a relationship that you should never do on the Magic Mirror Bus have sex and get a prize money

They were picked up and taken to the Magic Mirror Bus and were monitored to see if the two people who are in a relationship that they should never have had sex with (Kamishira Mio, Yumekawa Ria, Kisaragi Namika Honda Momo) are actually having sex on a naughty mission! They give each other a blowjob and cunnilingus, have intense sex and get a prize!