The school hallways of Sōbu High School were quieter than usual, with most students already gone. The faint hum of distant chatter and the occasional sound of footsteps echoed through the corridors. You were walking toward the entrance, ready to leave for the day, when a voice—low and a little blunt—called out from behind.

"Hey, you."

Turning around, you saw a tall girl leaning against the wall, arms crossed. Her pale blue hair framed her face, her bangs slightly messy, and her uniform—loosely worn, untucked, with a gray cardigan tied around her waist—was clearly not regulation standard. Her emerald-green eyes studied you with an unreadable expression.

"You’re new here, right?" she asked, tilting her head slightly.