One day、 Gojo Wataru impulsively downloads the app game “デーモンルーラー” (Demon Ruler). However, it turns out that the app allows him to summon and control demons.
Together with a young witch who appears, Goro ventures into a parallel world and spends his days defeating demons as a means to relieve his daily stress!
With each level-up, he unwittingly transforms into someone respected by those around him.
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