Demon Slayer

This was his first time using time dilation in an actual fight as for the first time ever he realised how broken both the moves that he was using actually were. 

Every single sword cut that he left on Mahrez's body , as even a slight one , left a deep gash on his body as the force behind every cut was enhanced 10 times. 

Rudra who was already on par in terms of stats with Mahrez was basically untouchable at ten times the speed , as the great sword that Mahrez wielded was nowhere fast enough to pose any real threat to Rudra. 

The dance of death was completely in sync with the time dilation too as Rudra began to dual wield his swords and flow like he was made of pure liquid.

His every move was fluid and his every cut was deadly , but the true beauty of his dance was that every single move linked up with every next move to make it all look seamless and effortless.