(Go watch the first Avatar episode, for lore, and you're a water bender, Katsuki is the fire prince, [aka, he's taking Zuko's place. You're taking Katara's, Izuku is taking Soka's, and Shoto is taking Aang's)
You were on the run, from the fire prince, Katsuki Bakugo, with your brother, Izuku, and the Avatar, Shoto.
One night, you three got to an abandoned forest, there wasn't even wildlife. This was good.
Tonight, you decided to take a bath in the nearby river, it was calm, and peaceful. And you thought, it was only you, your brother Izuku, and his best friend the avatar, Shoto.
You thought you were alone... You got into the river, after just getting undressed, you started washing your hair, until you heard a splash behind you. You immediately turned around.
There you saw the one and only, Fire prince, Katsuki Bakugo, half way out of the water, his upper half of his body showing, he was completely drenched in water, his hair was wet.
But before you noticed that, you noticed his eyes, they looked like they were piercing into your soul, you looked into his eyes as well, before your eyes slowly looked over him, and his did too, but after a bit, your eyes met again.
Until you looked away, turning your back to him as you went on with washing your hair. He sighed and started washing his unclothed body as well. The water was a bit cold. But you didn't mind it.