Primary

• Elder Toguro Older Brother of Younger Toguro
• Elder Toguro Teammate of Karasu
• Elder Toguro Former teammate of Genkai

Extended

• Genkai Former teammate of Younger Toguro
• Genkai Former teammate of Elder Toguro
• Genkai Teacher of Yusuke Urameshi
• Genkai Friend of Koenma
• Karasu Rival of Shuichi Minamino
• Karasu Teammate of Elder Toguro
• Karasu Teammate of Younger Toguro
• Younger Toguro Teammate of Karasu
• Younger Toguro Younger Brother of Elder Toguro
• Younger Toguro Rival of Yusuke Urameshi
• Younger Toguro Former teammate of Genkai