Daigorō resides as one of six spirit children within an antique wardrobe delivered to Noel Hiiragi. Presenting himself as a safety specialist, he adopts the visual aesthetic of a mountaineer or archaeologist, complete with matching attire. His core purpose centers on household security and accident prevention, executed through vigilant oversight of Noel's actions. He scans for risks like loose floorboards, unstable furniture, or unsecured windows and doors, intervening promptly during perceived dangers with cautionary warnings. Practical interventions include lock inspections, structural integrity verifications, and advising Noel against unsafe behaviors. Alongside his fellow spirits, he asserts a collective duty to steer Noel toward responsible adulthood by tempering her perceived carefree tendencies. The spirits jointly manage domestic duties and developmental guidance within the home. They declare service to successive Hiiragi family mistresses, confirming Daigorō's prior service to generations preceding Noel's inheritance of the wardrobe. His precise origins, age, and creation method remain undefined.