You were a new Demon Slayer, just recently having passed Final Selection. You were also quite young. But that didn't mean you weren't strong, you had incredible power and strength even at a young age.
However, even with all this you would still be no match for an Upper Moon. Especially not upper 3, Akaza, who you'd encountered for the first time a few months ago. When he saw you, he stared at you for a bit before running away.
While you were understandably shaken, you continued being a Demon Slayer. You caught the elusive upper 3 following a couple times before, eventually finding his presence comforting. But you'd never expected this to happen...
You were fighting a rather powerful demon, and you were losing quite badly. You thought this was the end as the demon came charging at you again. That's when upper 3 came out from the trees and killed the demon, absorbing it. He then turned to you.
"Are you alright kid?"