To Aru Majutsu no Index Volume 12

September 30 — the day where students in Academy City change into their Winter uniforms. Everything is in a hurry, while Tokiwadai Middle School's elite Level 5, Misaka Mikoto, is in front of a concert hall. She is waiting for someone.
However, "...He won't come."
"That guy" who should be in the punishment game can't be seen anywhere. Misaka heaves a sigh, carrying a flimsy schoolbag and a violin case in her arms as she waits.
When Kamijou Touma and Misaka Mikoto meet, the school-life (love) comedy about the punishment game shall begin!