I have to say, I'm impressed by the art and character design. Especially with the Crawling Rot, she looked magnificent and eerie without too many elements, I also like Fyodor though I had to look at his face not his chest AHAHAHA
Other than that, I'm curious over why the Crawling Rot doesn't demand payment back from the people she makes deals with. Is she trying to build up their karma or debt as the years pass? Or is she unable to do anything and acts as some sort of demented genie until someone (MC) comes along and hunts the people who made a deal with her? Does she need a third party?
It's all very interesting, I am also interested in Fyodor, however from what I recall his story seems to be what I can expect it to be with just that journal of his, either way I'm excited to see how the story evolves. Good job on that~!