Shino Hizuki, the eldest Hizuki sister, views the Rindo family’s schemes with skepticism. She initially believed Naoto’s engagement to her sister Suzune stemmed from genuine affection. After Suzune’s fatal accident, Naoto’s choice of Ayumi as her successor sparked quiet resentment, though Shino concealed her dissent to shield Ayumi from additional distress.

She positions herself as her sisters’ guardian, placing their stability above her own grievances. The unresolved questions around Suzune’s demise and Ayumi’s abrupt substitution dominate her private turmoil, mirroring her tension between upholding family unity and resisting external manipulation.