Medaka Box Temporada 1 Episódio 2

A second-year, Ariake-senpai requests the Student Councils aid for solving the problem of a threat she found in her sports locker along with a ruined set of spikes. Medaka immediately deduces the culprit down to everything but their name from just the letter and the state of the shoes, and goes down to the sports field to catch the culprit. After being outrun by Medaka, Isahaya-senpai denies having touched Ariakes spikes or making the note, but Medaka believes her immediately, dropping the matter. Feeling guilty, Isahaya takes Ariakes trainers and replaces them with a brand-new set of spikes and an apology note.