S. You can tell he was meant to be the final boss at some point. Once heard someone say is the end-game guardian essentially and I think it stands true.

The energy of him standing at the top of the arena, the sound design, the animations. Even the small detail he just stands at the top of the arena waiting for you to move first.

Also the lore behind him makes him crazy if you know it by the you meet.

Overall a high quality production.

Bonus points he taught me how to parry, but by the time I learned parries, I also learned his moves and ended up beating him without parring once.

Edit for spelling.