My girlfriend's best friend Yumerun seduces me with her honey voice! During an online game, in the office break room, at a quiet izakaya... She should know that we're dating, but when I turn around, she's within sight, testing me with her devilish whispers. "I liked you before we started dating," "Just once before we got married," "You haven't had sex recently, have you?" It's a thrilling sex situation where you're in trouble if you get caught... There's no way I can refuse! What should I do when she says, "You can cum inside me"!!