Tengen Uzui – The Sound Hashira

As a Hashira in the Demon Slayer Corps, Tengen is highly skilled and powerful in combat. He has displayed incredible physical feats of strength and speed, being seen as the second physically strongest and the fastest runner out of the Taisho era's Hashira.

He could match Both Daki and Gyutaro, Upper Rank demons with a history of battling and defeating numerous Hashira, displayed remarkable combat skills. 

Tengen effortlessly beheaded Daki without her noticing, to the extent that he didn't even recognize her as an Upper Rank demon. Impressively, he was able to fend off the combined efforts of Daki and Gyutaro while being infected by a poison that would kill someone quickly under normal circumstances, even managing to protect bystanders in the process.

Tengen has demonstrated remarkable expertise and accuracy in employing explosives, reducing collateral damage while maximizing harm to his adversaries. Thanks to his shinobi training, he possesses superior tactical abilities and heightened senses, particularly his acute hearing, which proved invaluable in battle.

 Despite losing his left hand to Gyutaro, Tengen managed to confront the Upper Rank on equal footing by completing his Musical Score. This enabled him to deflect Gyutaro's assaults, sever his arm, and subdue him, albeit at the expense of his left eye. 

Nonetheless, due to the poison circulating in his body, he was unable to attempt a finishing blow and needed Tanjiro to do so.