My new school life started and I enrolled in a school where joining a club was mandatory. I was worried because I didn't know what I wanted to do, but then I met Hatano-sensei. "Is this love at first sight?" I was knocked out by her kind smile and decided to join the swimming club, of which she was the advisor, with ulterior motives. It seemed that I was the only new recruit, so I began spending my days cleaning the pool with Hatano-sensei alone after school. While cleaning, I was captivated by her wet T-shirt and her competitive swimsuit digging into her crotch...