Wakabayashi and Marshmallow
Wakabayashi is still searching for Hige, when he comes running down the hall and crashes right into her. The two sit down to take a breather and Wakabayashi wonders if it's finally time to tell him how she really feels... Source: crunchyroll
Aired 25/03/2016EP 12 - Wakabayashi and Marshmallow

2016
Ojisan and Marshmallow
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)