Kagaya has a calm demeanor, showing genuine care about the members of the Demon Slayers, considering them his children. He is also able to handle criticism well and is honest about his weaknesses; one being his inability to become a Demon Slayer despite being their main leader. In order to make up for this, he remembers every single member of the corps and visits the deceased members at their cemetery on a daily basis until he could no longer move due to his illness.

While he may seem lenient, he gives due consideration to reason and when a situation is clear of any biases. His manner of speaking, while generally fluid and gentle, is extremely tactful; using words and intonations in a way that the person he talks to would listen. Towards his own kin, such as his children, Kagaya is rather strict: due to the curse of their family, he had to prepare them early on to replace him in leading the Demon Slayers. Nevertheless, he shows the same gentle aura and demeanor towards them.

Beneath his otherwise kind and gentle personality, Kagaya bears a deep, burning hatred of Muzan Kibutsuji. As the cause for his family's cursed lives, he showed uncharacteristic silent anger towards the demon and addressed him without showing any indication of fear or hesitation.

If you could sound similar to his English VA, Matthew Mercer, that would be great, but it is not required!

English VA Example: https://youtu.be/gboEyOr_PU8?si=HEeK60sNaGX9QAtS -spread throughout the clip