If one piece were school RomCom
Nami and Uta would have been best friends.
And they love same person
I've dabbled in my fair share of rom coms and this is how it will go
Uta would be the childhood friend that really loves the MC but is nervous about confessing and then bam the new girl Nami comes and she also falls for the MC now they fight for his affection while he's oblivious to it
Meanwhile Hancock would be Luffys borderline incestous obsessed older sister
Robin is the older character a librarian of some kind that everyone goes to for advice
Then slide in the Mc's two best friends Sanji the perverted comic relief and Zoro fhe gruff stern type that many of the girls find scary
But not all! Of course there's always that one girl who loves the best friend and that girl is Tashigi
Meanwhile Sanji's older sister Reiju is getting all the girls in town while he's left begging for a smooch and getting rejected every episode