The legendary doujin CG work "Koumamimi Island" by the hugely popular group Seisui-an has finally been adapted into a film! The voluminous content has been split into two parts, the first and second parts, and made into a live-action film!<br /> "Would you mind impregnating all the women on the island?" The village chief suddenly began talking about the customs of the island and a certain problem... I am a teacher who has come to a school on a remote island at the request of the chief to impregnate the women of the island who desire the sperm of boys from the outside world. I end up staying with a mother and son with lewd bodies at a guesthouse.<br /> Apart from sleeping with these women who have evolved to be super erotic in order to stimulate a man's instincts, he has sex anywhere and everywhere, and a parent-child threesome sex life begins where they desire each other so much that they end up getting pregnant!