Sekai ni Hitori, Zenzokusei Mahou no Tsukaite

世界に一人、全属性魔法の使い手 / The Only in the World, Omnipotent Wizard / The Only Person in the World Able to Use All Magic Attributes

After a traffic accident, Zenichi Kiyama, a humble office worker, was reincarnated as a baby in a different world called "perfect compatibility". However, the result of his attribute appraisal with crystal was "dark attribute". The worst result is that he is a demon child...!?