Trapped on an Island with Lovers (RWBY X Brother Male Reader)

(Since my Heated Moments book was deleted I think I should try making something new, the thing is that this one will be really short. It's also a AU) After winning a prize trip to a luxurious vacation with family team RWBY along with their families will go on the most peaceful and fun vacation after giving permission they all will go. The thing was their male members will not be able to go, some are obvious, others not. But the good thing was Ruby and Yang can take their brother (Y/N) with them who is Yang's half little brother and older full blood brother of Ruby, so RWBY, their moms and sister will go with (Y/N) on the vacation. Until their bullhead crash onto a deserted island far from mainland and with no way to call for help or wonder why their semblance doesn't work on this strange island, the good thing was it had everything they need and not a single Grimm in sight. While surviving they will eventually get bored and find a way to speed time up, being the only male (Y/N) will awaken something inside him that he can't help. Not hunger, not rage, but lust. Let's see how he can survive on an island filled with sexy women