Natsu to Inaka to Yuuwaku Shite Kuru Dekkai Oshiego

During the summer in the open-minded countryside, I got seduced by a tall and younger girl with massive tits! I keep getting rejected by girls because of my short height, and so during summer vacation I returned to my parents' house in the countryside and began part-timing as a tutor. However, of all people, my student turned out to be a tall and plump girl with massive tits; who for some reason is seducing me like crazy! This is a pseudo-OneeShota story featuring a guy who's older but smaller and a girl who's younger but bigger. (Source: DLsite, translated) Note: Released at Comiket 102, Comiket 104, 106