MKON-017 - My innocent girlfriend got broken by the PE teacher and turned into a total slut... we haven't even kissed yet

My girlfriend Ichijo was the quiet, nerdy type, and I thought I was the only one who knew her true, sweet side. But then, a rumor started spreading that she’d turned into a total slut who’d sleep with anyone. No way! We haven't even kissed yet! To clear her name, I stormed into the school bathroom where the rumors said she was, only to find out the heartbreaking truth...