[Reducing Mosaic]HNTRZ-004 Harem of the Lustful: Drowning in the Fluids and Pleasure of a Slim Classmate & Big-Breasted Senior's Ultimate Blissful School Life

I'm a freshman overflowing with dreams and hope. The most beautiful girl in the class, Mochi-chan, invited me to observe the swimming club, making me over the moon. Of course, I agreed and went with her, only to find out they were conducting an entrance test. I ended up taking the test without much thought, but as we began, for some reason, the club president was touching Mochi-chan's lower abdomen saying, 'You need to build it up like this.' When I tilted my head and asked, 'Build it up?' the senior members smiled and said, 'Because ours is the 'holy' swimming club!'