One day, I overheard my girlfriend Yui talking to her childhood friend Mio about how bad I was at sex... I'm terrible at sex. It doesn't feel good at all... Words I shouldn't have heard echoed in my head, "Damn! I want to get better at sex..." I was masturbating until my mind went blank when my childhood friend Mio suddenly came into the room and said, "Shall I teach you?" "What?" "How to make a girl feel good." "What do you mean?" "So, how-to sex." And so, even though I was confused, Mio was going to teach me the basics of sex...