beta
Before taking the poison he said something about living many life's until he can make her happy or something like that
My theory is that after poison his soul went on a reincarnation journey eventually ended up as the awakener and then got the prize of returning to his first life with the abilities to do so, the timeline its a time bending thing that's why the sistem says his soul in another world because it is but eventually it will time travel back and his memories will come back slowly (like the childhood one)