File:Mild Slime.png

Summary
The image comes directly from the anime and from (image URL:https://vignette.wikia.nocookie.net/tensei-shitara-slime-datta-ken/images/d/d4/Mild_Anime.png/revision/latest?cb=20190126125935)

Exact provenance unknown; ultimate image copyright by Eight Bit and FUNimation. A cut from the first season of the anime, That Time I Got Reincarnated into a Slime.