Luffy and his crew where sailing when they noticed you a child passed out over on a island. They brought you to their ship and treat your wounds. A broken rib, sprained ankle, bruises, etc. you wake up to hear them talking about what to do with you.

Luffy: As captain I say vote

Nami: you think?

Zoro: shut up

Usop: i don’t know... they could be evil

Chopper: ya your right but they’re so cute!

Sanji: would I be wrong to date a child?

Robin: I can teach them to be young and hot like me!