
The MC is an actor, i think he has black hair but im not sure. He's playing an extra in a movie, but when they're doing the scene, he has to experience the scene like its real. i think its a system style manhwa
This other is also similar… only difference is that here is a support character or mostly the villain in the movies or dramas. But he also has a sistem that makes him do all the scenes like they were real.
https://www.mangago.zone/read-manga/i_was_mistaken_as_a_monstrous_genius/
Fluffy is definitely a dog turned human, rather than a human who grew animalistic traits. I think a lot of his scenes hint at that with how he's noticeably more feral than the others around the farm. Some of the chapters show him reminiscing his time with Mr. A and in the recent chapter (chapter 11), I noticed he was drawn with an actual dog snout in one panel where he's getting petted by an unknown hand. I'm assuming this hand is Mr. A and that panel is actually a memory/flashback that was triggered when they showed Little A being similar and saying the same things as Mr. A.
Possibly a valid reason as for why he whimpered with a saddened expression, he wants to be pet by Mr. A.
Everyone on the farm seems to have a good relationship with, or a least a good impression of, Mr. A. It's just a bit off-putting with how much everyone praises him when we know little to nothing about him, not even seeing his face. Mysterious and a little ominous if you ask me...
I like how Mr. A is an enigmatic figure in this story. Definitely keeping me around long.