Rat
As the fight raged on, the power kept surging for the prince, and his body was getting more powerful and stronger. With the involvement of the crystals, he was able to attain the heights and even go through the roof.
Raphael was aware of that fact and had been observing the prince and his surroundings. Since before the start of the fight, he intended to let his opponent attack him as much as he wanted in order to strive for his objective, to get as much information as possible about the source of his powers and the effects of the remaining crystals.
Once Richard was done with his continuous barrage of attacks, it was Raphael's turn to take the offensive. For his first move, he decided to go with a sword art technique. Holding the hilt of his sword with both hands, he positioned his sword at the back.
"Sky Tearer."