Booty Royale: Never Go Down Without a Fight! Volume 4 collects volumes 9-10 in an Omnibus format and features story and art by Rui Takato.

The Ultimate Power and Beauty Showdown of female martial artists from around the world is now down to the elite eight! The K-cup karateka and aspiring singer Haebaru Misora is ready to thrown down with any of the other girls, but will she make it all the way and perform the final aria of this valkyrie opera?! Or will grapplers, kung-fu masters, and boxers force her to sing another tune–one of submission and surrender? It’s time to knuckle up with boobs out in this winner-take-all battle of brutal beauty!