@ryou83170 - because you are not strong enough, mate. If you are strong enough, you can see Sera not only attack 4 times, but 5 times, but she hold the 5th one because the 5th punch is a killer move. That's way the ice princess thanks her for holding back and not kill her opponent, the ice princess is strong enough to see all the attack. Keep training mate, maybe someday you'll be able to see the attack to...
so small pity see you again in like a month for the start in 2 months for the mid fight and in 3 months for the ending of the fight if its a quick one? i'm sure i got it right xD