Oda Nobunaga serves as headmaster of Basara Academy. His presence casts the imposing authority befitting his historical epithet, "Demon King of the Sixth Heaven," across the school environment. He oversees escalating power struggles among the student body following the suspension of the former student council president.

His most direct intervention manifests when he abruptly halts a heated inter-faction sports competition by sundering the academy's playing field. This decisive, disruptive act demonstrates his profound influence over school affairs and underscores his role as the ultimate arbiter of order.