Mao to Yusha No Kyodai Kan Kei [Light Novel]

[Machine Translation] Kei Amagi, a boy who was called the "Demon King" and feared by the delinquents in his junior high school days because of his strength beyond human common sense. He was a serious boy in high school, trying not to cause trouble for his cute younger sister. However, when his younger sister enters the same high school, a mysterious fortune teller assures him that she is a "hero," and Kei himself becomes infatuated with a loli girl called the "Ash Witch," his life is derailed into a strange and unusual one...? This is a loose, comical, yet slightly hot-blooded story of "The Demon King and the Brave".

人間の常識を超えた強さゆえ、中学時代に巷の不良たちから「魔王」と呼ばれ恐れられていた少年、天木啓。可愛い妹に迷惑をかけまいと、高校では真面目な日々を過ごしていた。しかし同じ高校に入学してきた妹が、怪しげな占い師に「勇者」だと断言されたうえ、啓自身も「灰の魔女」と呼ばれるロリ少女になつかれてしまったことから、彼の人生はヘンテコな非日常へと脱線していくのだった…!?ゆるゆるでコミカル、けれども少し熱血な「魔王と勇者」の物語。