How do you get the combo rasengan?

If you're reffering to Naruto: Ultimate Nina 3,then you'll get it after you go to the Hotsprings after a Combat Simulation(Gai wants to fight Kakashi so bad,he's willing to do all Kakashi's errands for him) mission. SPOILERS OF GAME LEVEL UP AHEAD!READ AT OWN RISK!: At the hotspring,Jiraiya will be worried about getting arrested for his research,then he asks Naruto to help him get away from Tsunade's servants,Tsunade,Kurenai,and Anko. After you past this,you'll unlock COMBO RASENGAN! And if you're stuck on the COMBAT SIMULATION mission because you don't know how to do an Additional blow,then press back(the back button that's pointing behind your character) and press O(circle),then press up,up,and O(circle). Then you'll do the 3 Additional blows.

If you're reffering to Naruto: Ultimate Nina 3,then you'll get it after you go to the Hotsprings after a Combat Simulation(Gai wants to fight Kakashi so bad,he's willing to do all Kakashi's errands for him) mission. SPOILERS OF GAME LEVEL UP AHEAD!READ AT OWN RISK!: At the hotspring,Jiraiya will be worried about getting arrested for his research,then he asks Naruto to help him get away from Tsunade's servants,Tsunade,Kurenai,and Anko. After you past this,you'll unlock COMBO RASENGAN! And if you're stuck on the COMBAT SIMULATION mission because you don't know how to do an Additional blow,then press back(the back button that's pointing behind your character) and press O(circle),then press up,up,and O(circle). Then you'll do the 3 Additional blows.