I think the mc will create a seperate heart engine for his sister. Nero will become a dragon after evolution. Or a teng snake. But i have no idea about MC's talent awakened by miracle fruit. I have so many thoughts going on
GODSLAYER INHERITANCE ??????
What happened to it
In the story beginning, the winner of the competition had integrated with her monster (ivory eagle) (MC's idol)
No integration info till date and its alrady duke stage.