Essence Technique

Sliding across the marble floor as he was being pushed back by a merciless onslaught of unhurried, but lethal attacks, Sunny was carefully observing Neph's movements. 

'Why can't I make sense of it?'

He shifted his weight, deflected the silver blade to the side, and used the long hilt of the odachi as a lever to spin its blade at an inconceivable speed. Nephis easily parried it with the crossguard of her sword, but Sunny was already transitioning from a downward slash into a rising stab. 

Every movement flowed into another, forming a torrent of deadly steel. 

'How strange.'

Nephis was the first person Sunny had ever shadowed. After years of training together and fighting side by side, he knew her better than anyone else. Therefore, it should have been easy to glimpse the true essence of her transcendent battle art, or at least start to unravel it.