Monkey Peak
Genres: Horror
Type: ONA, Episodes: 20
Aired: Oct 26, 2018 to Apr 1, 2019
Studio: Tomovies
Source: Manga
Synopsis:
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)