After a traffic accident, Zenichi Kiyama, a humble office worker from an exploitative company, was reincarnated as a baby in a different world that is apparently a perfect match for him. A bright life in another world was supposed to begin, but after undergoing a crystal attribute appraisal, he discovers that he has been born with a "dark attribute," a sign of demonic origin...!?

(Source: Shueisha, translated)