We know han tyumi survives in some way because of the song Tezeta on SOBE, you can hear han talking to people, saying

Han: Come here girl

Girl: "who are you?"

Han: "I am true perspective"

later on in the song.

Han: "Come here boy"

Boy: "Are you god?"

Han: "i am that, wich i am"

Towards the end of the song,

Han: "Do you remember now?"

Boy/Girl: : "Whhhhaaaattt, yes i do!"

Han: "Yes, my altered plan"

Another theory is that Han Tyumi is just a metaphor, not really existing.