 If you liked Tensei Kizoku no Isekai Boukenroku: Jichou wo Shiranai Kamigami no Shito |  ...then you might like Jitsu wa Ore, Saikyou deshita? |
another story that start out similar way... although the reason for dying was a different in both show the mc is unaware at first that he is very op due to the deities blessinges, in one the the mc is aware but in the other is unaware of it power but end up both related to the royalty.