Self-love is a difficult thing.
Mo Yinan once heard a mortal saying that went along the lines of 'You can't love anyone else if you don't love yourself.'
Bullshit.
He loves Nox more than all the worlds combined. But he hates himself more than a mere smear of dirt on the ground. It's only natural that he's the one who ought to pilot the Red Oracle. If they lose him; it won't be too big of a deal. If he gets injured, there will be some plot-armor bullshit that protects him until the Fate Scenario's completion— or worse, he dies.
And then reincarnates.
Because Sol cannot die.
It's not a big deal.
Ouros: Fool. I don't need you self-destructing even more now. Finish your scenario and then you can move on in peace…