The story centers around Kusaka, an older man who loves marshmallows, and Wakabayashi, an OL (office lady) who loves Kusaka. The anime follows as their relationship unfolds at their office. (Source: Anime News Network)
Genres: Comedy, Romance, Slice of Life
Watch Ojisan and Marshmallow episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.