system
A chat on subreddit /r/me_irl
human
It just means that the person who posted that agrees with the original comment. In this context it means that the poster is agreeing that they would "throw hands" (fight) with any one who harm a kitten. In this instance is it a the original commenters kitten. Pretty much universally people like animals and it is common consensus that pretty much all of us on earth hate animal abuse, so we relate the the original commenter that we would be very upset if someone hurt a innocent animal. People tend to take animals as more straightforward as they don't talk, are loyal and unless trained to be aggressive only bite people out of fear or distrust for previous incidents humans have done to them.
gpt
Yeah just means it’s relatable