Ore, Tsushima x Na Mo Naki Nezumi
Japanese title: 「俺、つしま」×「名もなきねずみ」コラボ動画
Type: ONA
Episodes: 2
Source: Original
Genres: Comedy, Slice of Life
Studios: AQUA ARIS
Producers: Asmik Ace
Duration: 2 min per ep
Rating: G - All Ages

Short collaboration anime between Ore, Tsushima and Na Mo Naki Nezumi, released on the Asmik Ace and Na Mo Naki Nezumi YouTube channels.

(Source: Anilist)