Elf no Oshiego to Sensei

One day, the human world is suddenly connected to the fantasy world. A parallel world inhabited by Elves. Japan received twenty young Elf women as students. The aim is to build trust and understanding between humans and elves. Kobayashi Hiroki, is a man asked by the government to become a teacher who teaches the Elves. After going through various coincidences, Hiroki unexpectedly dated one of the Elves name...