It’s from AnimeMaru, which is (was?) basically the Anime Onion.
However, “Mukuwarenakatta Murabito A, Kizoku ni Hirowarete Dekiai sareru Ue ni, Jitsu wa Motteita Densetsu-kyuu no Kami Skill mo Kakusei shita” (The Villager Who Was Abandoned, Was Picked Up by an Aristocrat and Awakened a Legendary Divine Skill) is an actual series which has an anime announced.