World is earth with a "spirit awakening" or some crap.
MC just isekai'd the **** into a kids body with a tree in his head.
The dumb thing is that he needs to "contribute" to increase his strength.
As someone who likes Earthlings are Insane, I am already drawing parallels to what will happen later in the book.
I am honestly not interested in reading any new "saving humanity systems"
I guess the tree crap is new, but it's still not my cup of tea.
Read at your own pleasure.