Path of the thunder emperor ~Become the Strongest in Another World with [Thunder Magic] which Only I Can Use! is a Manga/Manhwa/Manhua in (English/Raw) language, REINCARNATION series, english chapters have been translated and you can read them here. You are reading chapters on ManhwaZ fastest updating comic site. The Summary is
What I have in my hand is "thunder magic" that only I can use...! The adventure story of a boy who was reborn as the one and only lightning magician to become the strongest in a different world begins now!