Kazuma is a calm, serious, and sensible person. He cares deeply for Vaisravana/Bishamonten, calling her by a pet name, "Veena", as well as his fellow Shinki. He is also shown to be extremely loyal to his master, as well as responsible and trustworthy. He also honors his debts. He is polite to everyone, regardless of if he is stressed or not. When he was just starting as a shinki, he was shown to have no talent but is currently a blessed shinki, meaning he is hardworking and his loyalty and care for Veena motivated him to be the best shinki he could. He is a kind person in general and a good teacher. Despite his serious nature, he is shown to have a comical side, particularly when it comes to his loyalty/crush/mild obsession with Bishamon. He also enjoys teasing his friends. 

He is very knowledgeable about his duties as a shinki and about techniques to use as a blessed shinki, despite most likely not having a teacher. He is very analytical of Bishamon's battle situations and does his best to guide everyone to make sure they can help her to the best of their abilities. Despite showing pride in his abilities, he is not arrogant about them and does his best to continue improving himself for Bishamon's sake. In order not to blight his master, he is shown to suppress his feelings and not feel guilt for his actions, no matter what they be. Furthermore, he claims that he's imperfect and has regrets. However, he felt that he did the right thing and so it was not a sin and doesn't warrant anyone's criticism. His loyalty to Bishamon can go to extremes as he was willing to slay his fellow shinki to save he.

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

English VA Example: https://drive.google.com/drive/folders/1OM1LOt3tUI51CA6x_rnARuTM_AYJr0kY?usp=sharing