Author Kiichi Kosuzu Twitter account that his light novel Saikyou Onmyouji no Isekai Tenseiki anime adaptation in the works.
Synopsis
Haruyoshi, the strongest of the meusoji, was on the verge of death after the betrayal of his companions. Hoping to be happy in the next life, he tried the secret reincarnation technique and was sent to a different world! Born into a family of magicians, the magic he didn't inherit was nothing compared to his previous abilities as an onmyoji.
Kosuzu began publishing the Saikyou Onmyouji no Isekai Tenseiki novel on the Shousetsuka ni Narou in December 2018.
Finally, the most recent update of the novel was in April 2021.
Source: ANN