Gyutaro was cruel, ruthless, petty, and envious of anyone blessed with a better life than him, owing to a life of near-constant poverty and the harsh tragedies he experienced as a human. Despite his negative traits, Gyutaro possessed a genuine, strong love for his younger sister, Ume. Having raised her himself due to his mother's mental instability and death, this familial love was so strong, even after nearly forgetting his life as a human, he still retained a considerable attachment to her.