Atsuro and Pyro Jack? Well they certainly cover each others' weak stat. Atsuro's face could use more work, but this is good. The fact Pyro Jack is one of the Demons I use (Although not with Atsuro) may help my liking of this picture. Good job, except for that face.
I personally love the lighting reflect on Pyro Jack's clothes, it looks great and very well done
The expressions attract me over all, the way they are matches very well with the charatcers to me c:
As for the picture of Jack Frost and Yuzu , great job