Monkey Peak
Japanese title: モンキーピーク
Type: ONA
Source: Manga
Episodes: 20
Status: Finished Airing
Aired: Oct 26, 2018 to Apr 1, 2019
Duration: 1 min per ep
Studios: Tomovies
Producers: Anime Beans
Genres: Horror
Demographics: Seinen

The anime centers on a group of pharmaceutical company employees who embark on a mountain-climbing trip together and who encounter tragedy at the hands of mysterious monkeys when they reach the top. 

(Source: ANN)