PoV Tsuitame
The last kick managed to push quite a couple of meters back, then the being focused his energy all on healing his missing talon, so I immediately charged forward, turning Sterio into a small bracelet and holding the giant sword with both hands. As I swung the blade at him, I noticed he was already preparing a defensive wall. I decided to make a feint, and a moment before the blade came into contact with the wall, I jumped over it.
I used my aura to spin in mid-air, allowing me to land already facing the beast, and as soon as I landed, I swung down the blade, activating its ability. The single leg couldn't hold the added weight, and he fell down as he tried to catch the blade with both hands. The sword split open his head and got stuck somewhere under his ribcage, so I spun around a couple of times in order to throw away the body and free my sword from his corpse.
The enemy was still regenerating its wound, even after I had crushed his brain.