
I had a theory before (Animal Version) that his Mother and brother got caught in a landslide when they were sleeping under the small space amidst the heavy rain, I think he rolled out of it so he wasn't caught (if I'm right I'mma cry my heart out) which is also why he couldn't find them because they are under that mud/soil. And if you think about how he tried to find them on different places when they are infact very close, might be fate so that he could meet Papa wolf.
Now (Human Version), an investigation was ordered which I think will be successful, and maybe the cause of death is almost similar. Papa wolf will be informed about the fact that he is already orphaned and decided to take him in (adopt).
and that's it, thank you for reading(๑•ㅂ•)و✧
If "Hyung" is the magic word.
"You can do it without condom" is the magic chant.
╮( ̄▽ ̄)╭
The truth has been spoken
(≧∀≦)