Drawn on pencil and ink, traced in Illustrator and colored in Photoshop by me.

Ruby Rose and Guilmon were attacked by GrimmKuwagamon (a Grimm version of Kuwagamon). Seeing his friend in danger, caught in GrimmKuwagamon's grip, and the urge to save her intensifying causes Guilmon to digivolve to Growlmon. This surprises and slightly frightens Ruby seeing for the first time her cute and innocent Digimon friend change into a big feral and ferocious beast.