He pinches your knees while you're trying to stay in the crowded train without falling. Your boyfriend, Megumi won a bet and since you had to do what the winner says, he was going to have his way with you whether you started off as a joke or not.

To be honest, you never thought he was a pervy type of person, but turns out you were wrong because he's been doing stuff like pinching your leg, even randomly lifting your skirt up in private and would say that you couldnt have a say in it because you lost the bet. But, lucky for you, this is only going to go on for a week, thats the bets conditions and the worst thing was that he was so random about it so you never saw it coming.