Natsu no Owari no Kokuhaku ~Osananajimi, Onjou Shizuku no Baai~ The Motion Anime

Her older classmates call her 'the quiet girl next door with big breasts': she's short, but already curvy like a woman. She and I are 'just friends', even though everyone around us knows that I'm in love with my childhood friend. In the summer, she signed up to the same swimming pool as me, hoping that I would finally become more than just a neighbour to her — that I would become her actual boyfriend. However, I kept my distance, and one evening, after I was rude to her, she ran off to the park and cried on a bench. Our temporary coach, Shingo, a handsome, confident older man, whom the girls in the stands whisper about, happened to stop by. He comforted her, took her to his place and poured her some sweet tea with a pill in it. That night, my girlfriend was brutally raped and didn't resist, moaning as her virginity was taken on camera. Since then, after every swimming lesson, Shchyu stays for 'extra practice' in the coach's room, receiving secret sex lessons that have turned her former feelings for me into a habit of orgasms and semen on her tongue.