The Eminence in Smartphone

Mochizuki Touya, a regular Japanese high schooler who got accidentally murdered by God, reincarnated in a new world where he would build a nation with his nine wives. Cid Kagenou, a delusional Japanese high schooler, ran over by a truck, reincarnated in a world controlled by the malevolent Cult of Diabolos. Founder of the mysterious organization, Shadow Garden, whose only objective is to destroy the evil cult. When an evil plot from the Cult of Diabolos connects the two worlds, the two reincarnates finally reunite.