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...! ?

Setelah kecelakaan lalu lintas, Zenichi Kiyama, seorang pekerja kantoran yang rendah hati, bereinkarnasi sebagai bayi di dunia berbeda yang disebut "kompatibilitas sempurna". Namun, hasil apresiasi atributnya dengan kristal adalah "atribut hitam". .! ?