Raitei no Kiseki: Ore dake Tsukaeru "Kaminari Majutsu" de Isekai Saikyou ni! Trajectory of the Lightning Emperor

Synopsis

What I obtained is the "Lightning Magic" that only I can wield! So begins the adventure story of the the young man who was transmigrated as the one and only lightning mage and will become the strongest in another world! (Source: Kadokawa, translated)