Nicks Fou Bartfort

Nicks Fou Bartfort (ニックス・フォウ・バルトファルト, Nikkusu Fō Barutofaruto) is the eldest son & child of Bartfort Household & Leon's older brother. Nicks is more earnest and upright than his lighthearted younger brother. While Leon often jokes around in most situations, Nick usually goes straight to the point and takes matters seriously, whether his education or duty as the eldest son. Furthermore, unlike the twisted Leon, he feels uncomfortable about trickery and underhanded methods. Nevertheless, both brothers and their father share a sense of modesty, preferring a peaceful, low-profile lifestyle over pursuing power or fame.

I don't have a set voice for him but I would like something in the Medium to Medium Low range