I'll grow old enough for the both of us

For your sake, I'll live to a ripe old age.

It'll be a while yet, so wait up for me.

I'll hold as precious the sort of ordinary happiness you were never able to grasp, and... That's why, that's why:

All this time you weren't able to live, I'll...

You're so prone to worrying, Caesar-chan. Has that worry faded yet?

Well... Guess you'll never have to worry about things like spots in your vision, or greying hairs, or balding, huh