Oto Adashino

As Ren's younger sibling, this all-girls school student begins her journey with a deep-seated suspicion toward Sumireko. Though she may appear guarded at first, she possesses a notable weakness for sugary treats that defines much of her charm. Navigating her life within the shadows of her brother's world, she balances her academic pursuits with the complex interpersonal tensions that arise as she learns to trust those around her.