Yolohy
I didn't sign up for a horror-gore story. you should put something earlier in the story that indicates how brutal this is. the beginning of the story promised a cute fun story about a person who reincarnated into a dog. this is just gruesome. there are probably people who appreciate this kind of thing that are turned off by the cutsy nature of the first few chapters that would read if you indicated it would get this bad latter on. and there are people like me who are turned off by the unexpected gore. you end up with less people reading the story. you might want to describe the MCs first death in more gruesome detail to signal to readers that hey while it starts out cute and fun, it is fundamentally a gruesome horror story. that way more people who appreciate that kind of story will get this far. it's important to make keep the promises you make to your readers, or failing that change going back to update the original promise.