Hi, a year ago i saw this gory manga not of very good quality, it was rather quickshots about possessing parasites, it would enter victims by crawling into their mouths from infected person mouth, while other infected holds them, those infected would look like some kind of animated corpses. Welp I've been looking for it for some time recently and couldn't find anything on my hd or online. The style of it kinda reminds me of beastanime but i didn't find it on their pixiv or other sites, I'll put example of their work for reference