Story
TV short — Winter 2016, 4 episodes, Finished.
In the story, Mim and Mam receive a present at their house one day from their father. When they open the present, they discover the stuffed animal Choco Mint that is 70% rabbit and 30% bear. The duo aren't sure what to make of the package, but they start to talk with Choco Mint.
Synopsis via AniList (English).