Based on the erotic doujin game by Dieselmine (ディーゼルマイン).<br> <br> While working at a bar, the protagonist was asked to draw water.<br> Upon picking up a mysterious stone he found there, he was whelmed by light.<br> When he woke up, he finds himself in a country of succubi......!<br> Various types of lewd demons draw near to him. He has to store a certain amount of magic energy in order to get back to his original world!<br> What he will eventually face would be escape, or destiny to be a sperm slave forever...<br> <br> (Source: DLsite English)