Amamiya Yuuhi, an average college student, wakes up one morning to the sight of Neu Crescent, a talking lizard claiming to be a knight. Neu asks for him to help save the world and protect their princess from an evil mage seeking to destroy the Earth, but Yuuhi finds it hard to believe such an absurd request. However, later that day a golem created by the evil mage appears before Yuuhi. Yuuhi is about to die when suddenly—
by the little Lucifer before me
بواسطة الشّيطانة الصّغيرة أمامي
Die kleine Lucifer vor meinen Augen.
ante ese pequeña demonio ante mí
ante esa pequeña demonio ante mí
venait d’avoir raison
de ma volonté.
Dalla piccola regina dei demoni 
che avevo davanti.
pela pequena Lúcifer à minha frente.
полностью пленил моё сердце.