Tengen is a very eccentric person, always wanting to complete actions "flamboyantly." Although he has displayed an uncaring and forceful attitude towards some people—he gets excited imagining how "flamboyant" it would be if Tanjiro Kamado's blood vessels exploded, and tries to forcefully haul Aoi Kanzaki off to the Entertainment District with him so she can unwillingly help him with a dangerous mission—he also has a caring side that is mainly only shown towards his most treasured ones, most notably his three wives, Makio, Suma, and Hinatsuru. He also shows a somewhat nicer side towards Tanjiro after their mission and starts to accept him more as the series goes on.