An anime adaptation of Rekomaru Otoi's web manga Ojisan to Marshmallow has been green-lit according to a wraparound jacket band found on the second volume. The series had its first volume published in November and has since reached over 20 million views on Pixiv.

Synopsis
The series is about a man named Kusaka who has a fascination for marshmallows. Kusaka gets involved in a relationship with an office lady named Wakabayashi, and the story focuses on their relationship in the workplace.

Source: Otakomu

Ojisan to Marshmallow on MAL