The Strongest Shopkeeper (oneshot)

Jack once wanted to be a scientist, then a writer,a job that would move the world. Unfortunately the cruel reality, and the need for money brought him to the path the masses pursued for riches, engineering and buisness studies. Little did he know that fate would take an unexpected turn and he would transmigrate to a new world. Armed with his knowledge from 21st century Earth. He would become the strongest shopkeeper. Watch his journey as he makes new friends and scams his opponents to bankruptcy.