In this prequel spin-off series, Megumin from the Crimson Demon Clan devotes all of her energy into perfecting Explosion Magic - and nothing else.

A deaf girl, Shoko, is bullied by the popular Shoya. As Shoya continues to bully Shoko, the class turns its back on him. Shoko transfers and Shoya grows up as an outcast. Alone and depressed, the regretful Shoya finds Shoko to make amends.