Tengen Uzui  is a Demon Slayer and the Sound Pillar of the Demon Slaying Corps.  

Tengen is a very eccentric person, always wanting to complete actions "flamboyantly."  

I won't be strict on this voice. You can try to replicate how the Japanese VA sounds, but you can also add your own twist to it. As long as you can act good and carry the character, then your chances of getting cast will be great!