Level up your beginning moves, such as Ryudo'sTensaiken Slash, Elena's Impact Bomb, etc. By doing so, using your fully leveled up moves should put you at the Act point on your IP gauge, causing you to surpass your enemies turn. You should also be able to push your enemies back to the beginning of the IP gauge with your move. If done correctly, you can prevent your enemy from attacking and continuously surpass your enemies turn.