Tbh I'd do the same thing, too. I mean, the kid's dangerous. Better get on his good side, right? Also, he spent quite a while with the kid and he already knew he was mistreated. He knows he's a good kid and the villagers were probably the ones who hurt him this much.
He probably noticed that only the people who tried to hurt him died. Since he didn't die himself he figured out that the kid only killed bad people. I might be reaching tho
Yes, but it's also his silly little personality ( ꈍᴗꈍ) he's too cocky and affectionate to feel afraid. Even @Shemi said it's a good idea to stay on his good side because he's dangerous, but Taehyuk doesn't even think that far. Thoughts slide right off his beautiful, smooth brain. I bet he's thinking. "I guess you exploded them. They kind of had it coming, I guess ✧◝(⁰▿⁰)◜✧" and that's it LOL
the most canon answer.
Literally dudes exploded right in front of him, their dismembered bodies or whatever all around him. Bro turns around and hugs the kid even though he knows it was his doing LMAOO, Taehyuk is just too cute. He gave exactly zero shits. He does this when Hyo Un literally snatched his plane and landed it. "Aww shucks, come get a hug." So cute haha.