Doryoku Shisugita Sekai Saikyou no Butouka ha, Mahou Sekai wo Yoyuu de Ikinuku is a Manga/Manhwa/Manhua in (English/Raw) language, Shounen series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

That attack isn’t magic, it’s physics... One day, a martial artist named Ash was suddenly reborn into another world. He decided that he will become a sorcerer in his second life.