@Yamibi I have to say they definitely have humanoid forms. From this chapter it looks like it, however considering how creatures in manga have humanoid forms; they tend to look young... In other words Lolis.
@LGBG or more specifically the publishers that the author went with have a habit of throwing around dmca's and he didn't wanna translate for the publishers to then turn around and thanos snap the rest of his chapters. so he played it safe and stopped, which i might add i don't blame him.