Elf no Oshiego to Sensei
Japanese title: エルフの教え子と先生
Alternative titles: JK Elf to Kimi no Sensei., Elven Student and Teacher
Type: OVA
Source: Light novel
Episodes: 2
Status: Finished Airing
Aired: Aug 3, 2018 to Dec 7, 2018
Duration: 17 min per ep
Rating: Rx - Hentai
Studios: Flavors Soft
Producers: Mary Jane
Genres: Fantasy, Hentai
Themes: School

Kobayashi Hiroki is a teacher for a tribe of elf students who came from another world. No one is sure why the world where the elves come from collides with our world. Hiroki however has fallen in love with Laranoa, one of the otherworldly students, which is strictly forbidden... So they act on their love in secret whenever they get a chance to be alone.

(Source: TMDB)