Isamu Yusen

Karasuno High ingresa al Torneo de Voleibol Inter-High e inmediatamente demuestra que ya no son 'cuervos que no vuelan'. Después de su primer combate, Karasuno se enfrenta a Date Tech High y su famoso Muro de hierro, que detuvo todos los picos del as de Karasuno, Asahi, durante un combate anterior. Karasuno, sin embargo, rompe el Muro de Hierro esta vez y pasa a los octavos de final. El recién rejuvenecido Karasuno lucha contra Aoba Johsai High y busca tener el mismo resultado que su primer partido de práctica.

Yoji and Kei, a boy and girl, live in a town in the not-so-distant future with their foster parent, Anna. But these seemingly ordinary children have a secret hidden even from their unsuspecting mother. Yoji and Kei are superhero defenders of their town! With a flap of their capes, the two of them and their robot bear sidekick, Oscar, protect the citizens in their town with their handmade high-tech machinery. But from what menace? And will our little heroes be able to overcome the crisis about to threaten the town's peaceful everyday serenity?