Neko ga Kureta Marui Shiawase
Japanese title: 猫がくれたまぁるいしあわせ
Type: ONA
Source: Original
Episodes: 5
Status: Finished Airing
Aired: May 22, 2017 to Mar 23, 2018
Duration: 53 sec per ep
Rating: G - All Ages
Studios: Yokohama Animation Laboratory
Genres: Comedy, Slice of Life

Protagonist Mari Hirakura joined the workforce almost 10 years ago. Even though she talks to her friends about things like jobs, marriage, age, and family, she still feels like everyone's troubles can be varied and complicated. She does her best every day but still wonders if she is okay the way she is. 

(Source: ANN)