Choose Ryu. "Partner: Sakura, "Partner II: choose whatever you want... In his first form, Sent your partner, Sakura out, she will do a 7 hit combo then follow up by Ryu attacking him, this will charge up your gauge bars much faster.. when he is defeated he will transform, then use Ryu's special adokan move around 3 till 4 times and he should be defeated.. Third form: Using Sakura, When you saw abyss, Fly up and charge him with the 7 hit combo, when you have 1 level of your gauge bar, attack him with adokan fireball move, it will be effective against him.. Repeat this and he should be defeated..