Demi-chan wa Kataritai

Synopsis

From Kodansha:
Call them “demis”. Vampires, dullahans, succubi, snow women. These are just a few of those beings once known as “demi-humans,” and high school Biology teacher Testsuo Takahashi has always wanted to meet them. He gets his chance when the new term starts, and there are four “demis” in his school! Join the caring, bumbling Tetsuo in his quest to get to know these adorable monster girls, while helping them navigate the highs and lows of high school.

Official English: Azuki, INKR Comics
Official Ukrainian: Видавництво Мольфар

Note: Won the DaVinchi x NicoNico Tsugi 2016 Manga Awards by taking 2nd place.

Synopsis & details from MangaUpdates