Minami Shimabara is the eldest of the three Shimabara sisters, the family’s primary breadwinner, and the de facto head of the household following their parents’ absence. At twenty-four years old, she has taken on the role of a surrogate mother to her younger sisters, Ushio and Yuuhi, working multiple jobs—including delivering newspapers and working as a hostess—to keep the family financially afloat. She is also the owner of the Star Hole Company, an enterprise that coaches young people on how to manage media attention, which becomes unexpectedly relevant when the sisters inherit the giant guardian deity Neo Ranga.

Minami’s personality is shaped by her heavy responsibilities and constant financial pressure. She often comes across as cold, aloof, and pragmatic, a demeanor that stems from her protective instincts and her relentless focus on money. Her practical nature leads her to view Neo Ranga not only as a divine protector but also as a potential source of income, and she does not hesitate to leverage the god for financial gain when the opportunity arises. Despite this outwardly hard-edged attitude, her motivations are rooted in a deep desire to provide a stable and secure life for her sisters. She strives to live simply and shuns material excess, even though the family’s poverty forces her to stretch every resource.

In the story, Minami serves as the stabilizing force among the sisters, the one who mediates between the extraordinary circumstances of ruling a Pacific island kingdom and the mundane challenges of everyday life. Her relationship with her sisters is central: she is protective of Ushio and often exasperated by Yuuhi’s more selfish tendencies, yet she remains the anchor that holds them together. Although she may appear emotionally distant, her actions consistently reveal her commitment to her family’s well-being. Her experience with the Star Hole Company also proves valuable when the sisters must navigate public and media scrutiny that comes with their connection to Neo Ranga.

Minami does not possess any supernatural abilities; her strengths are practical and organizational. She manages multiple jobs, runs a small business, and shoulders the logistical and emotional weight of her family’s sudden, bewildering inheritance. Over the course of the series, she is forced to balance her hard-nosed pragmatism with the unpredictable demands of a living god, gradually developing a more nuanced understanding of what it means to be a ruler and a custodian of power. While she begins by treating Neo Ranga as a tool for financial relief, her growing sense of responsibility and the challenges she faces push her toward a more complex relationship with the deity and the legacy it represents.