Let's use magics.
He uses "Abso" that absorbs your magic many times,So
you should be careful about using magic.
But you have chance.He relaxes his guard after he using
He is very strong.You cant't absorb his special magic.
But his behavior pattern is roughly decided.
You have to remember it and put up with his attack.
If you were able to endure his attack for a while, you win automatically.