

A great one-liner scenario, but what's the line?
This came to me a few minutes ago and it's already driving me insane. Imagine this;
Adult Deku, already in a relationship with Uraraka for a while, gets sent back in time to his 1-A days. He meets himself and the whole class, doesn't tell anyone what happens in the future for reasons, etc (there's probably a hundred fics on this already.)
Then he's about to go back to the present, says goodbye to everyone, gives seemingly vague advise and encouragement, then he waved Uraraka over. He leans down and whispers.......
WHAT?!??!!??
I've been agonizing over this! Please, for the love of god, give me some good quotes for what he says and ease my suffering! (<read like Kratos offering his soul to Ares)