"Does everyone... really... do this sort of thing...?" I'm Haruki, a teacher who moved to start a new job at a school on an isolated island where the population is continuing to decrease. There, I met Chie, the oldest student in the school. Her big boobs jiggled... and on top of that, I could see her nipples poking through her gym clothes...! She lives alone with her grandfather and she has never stepped a single foot off of the island, so she didn't even know about bras. And so, I took it upon myself to teach her directly about how to put on an I-cup bra. Trusting what I told her since I was her, Chie responded sensitively as I played with her boobs and pinched her nipples. I couldn't control myself... and started sucking on her hard nipples! "Next, will you try... opening your legs?" As her teacher, it's my responsibility to give this naive girl some thorough instruction...!

(Source: Kagekiya, translated)