Although he is often described as a hopelessly violent villain in novels and TV dramas he also had open-hearted aspects which can be seen in such cases as: when Shinsen-gumi members had to borrow Montsuki kimonos from YAGI family upon visiting Katamori MATSUDAIRA, the Head of Aizu Clan, for a petition Gennnojo YAGI worried that they would all be bearing the same family crest (an extremely ridiculous situation at a public occasion), but SERIZAWA laughed, not minding at all; or when SERIZAWA came secretly to return a hibachi he borrowed from YAGI family, YAGI questioned him about cuts made by swords on the hibachi (when the members got drunk, they tested out their swords on randomly selected furniture that belonged to the YAGI family), but SERIZAWA said it's me, it's me and scratched his head and escaped.