This is a pretty crazy headcanon even for me, and it’s kind of an AU of my AU, so get ready.

So, back in episode 21 and 22, the possibility was discussed that the Klaxosaur Princess’ soul was inside of Apus along with Zero Two. Anyway, my hc here is that when Hiro and Zero Two come home, inside of Strelizia’s cockpit, they find a little girl (like 5 or something) with silver hair and a single blue horn in the middle of her forehead

This little girl has no memory of who she is, and they realize that the Klaxosaur Princess has been reborn. Naming her Hitotsume, Hiro and Zero Two decide to raise her so that she can live a life without constant fighting.

Hitotsume never fully regains her memory, but she knows that she can trust Hiro and Zero Two with anything. She grows up to be a quiet, but very happy little girl. By the time of the 10 year timeskip, she’s become the unofficial big sister of all the Squad 13 children and is ready to help them with anything.