Amane Ōguro is the niece of Miki Shiba, the landlord of Villa Rosa Sasazuka. She operates Ōguro-ya, a beachside shop with supernatural properties. The shop can vanish entirely, simultaneously erasing all local memory of its existence, often accompanied by dense fog when she activates its concealment. She has tan skin, long black hair usually tied in a ponytail, and blue eyes. Her personality is energetic and caring.

Her true nature is Binah, a physical god representing Earth's version of the Sephirotic Tree, making her a distant relative to Alas Ramus, a fragment of Ente Isla's Yesod. As a cosmic entity, she operates under strict rules preventing her from disclosing information not already revealed by her aunt. She wields considerable power over environments, capable of disrupting energy balances and manipulating natural phenomena like fog. She is also immune to demonic powers.

Initially, Sadao Maou and Emi Yusa’s allies suspected her of causing chaos in Ente Isla and destabilizing the Demon World, but she clarified her role as a bystander during the Malebranche conflict with benevolent intentions. After events at her beachside shop disrupted the local energy balance, she dismissed her employees, swept the area in fog, and vanished. Following this, her father expelled her from Ōguro-ya, leading her to relocate to Villa Rosa Sasazuka. She maintains a pragmatic approach, balancing human interactions with her duties as Earth’s guardian.