Theodoric Shang Yinchao (???), a Chinese student was transported into a world where there are no such thing as Daoism, Foism, Ruism and etc. Binded along with him was a shop system that sells only ingame items. The world he was transported was not the only world he would be opening shop.
Shang: Hi, Batman, do you want to buy Ironman schematics?

Bruce Wayne:....

Shang: Hi, Hanabishi, do you want to learn real ninjustu?

Hanabishi Recca:....

Shang: Hi, Xiao Yan, do you want the True Fire of Samadhi?

Xiao Yan:....