Ginosuke Isuzu  

, 五十鈴銀之助

Since childhood, Ruminas best friend has been Ginosuke. Despite not possessing any special elemental abilities, Ginosuke is highly intelligent but may lack street smarts. He later acquires a valuable weapon capable of launching elemental attacks. Although somewhat reserved, Ginosuke exhibits strong common sense and can become quite assertive when necessary. Ginosuke consistently wears thick glasses that significantly alter his appearance, making it challenging for his friends to recognize him without them.