he lost to sakazuki. he wants to restore his self worth by becoming the new legendary hero of the navy. garp also was never fleet admiral, yet overshadowed sengoku. he did that by helping to defeat rocks. the modern rocks is teach. so kuzan waits for the perfect time to backstab him and take out the most dangerous pirate, while sakazuki just pushed pencils around. kuzan thinks he can't do it alone. garp teamed up with roger against rocks. kuzan, student of garp, will team up with shanks, student of roger. both use the signiture attacks of their masters. fist, divine depature. they are still not modern garp and roger, smoker and luffy are, so they are doomed to fail, but they will try nonetheless.