An Enraged Saiyan Fury: RWBY Harem x Broly M...
This an idea that I thought of after reading a story that's like this, but this will have a different concept instead of the other one.
So, what would happen if the last survivor of the destruction of the Saiyan Planet used his power to arrive on Remnant as he is raised there by a family that loved him so much, but then one day a certain event happens where he unleashes his Saiyan powers and unlocked the Legendary Super Saiyan power, then years later he figures out what he is as he decided to use the Saiyan power for good. Then he gets invited to Beacon and there he gets the attention of some certain girls.
Disclaimer: I do not own RWBY and Dragon Ball. RWBY belongs to RoosterTeeth and Dragon Ball belongs to Toei.