Moyu (モユ)

One day, while out protagonist Haru was on her way home from shopping, a mysterious guy appeared in front of her. He called himself Isua, and told her he was a mage from another world. Although his initial appearance was a bit of a problem for Haru, through the passing of time, he came to be thought of as an important part of her family. This was until his magic power returned to him, and so did his original form. Confused, Isua told her something that she found even more unbelievable... "To send myself back, I need to fornicate with a virgin"