Seeing Time almost back away from the master sword is smth I never noticed the first time I read through LU
He mentions not wanting to wield it a few times, but I think this is the first time we see him physically react to her
I do think that it's mainly bcuz he knows it's going to be used on Twi, his descendant, and is worried of the possible results, but he doesn't stop Sky, he trusts Sky enough to trust the life of his own descendant to the sword, the same sword that changed him forever, and caused irreversible and immense damage to him.
The poor guy











