As a Bookstore Owner, How Should I Survive in Mingke?

The weather was sunny and cloudless. Sheng Yu, who had just got off the plane, dragged her luggage and set off to the hotel she had booked. As a result, as soon as he arrived in Tokyo, he was inexplicably told by a guy who claimed to be his grandfather that he wanted to run a bookstore... "No, who are you? Isn't my grandpa still at the flower garden?" When he came to his senses again, he found that the surrounding environment had changed drastically, and he was indeed standing in front of a bookstore... Looking around, I saw that there was a whole street full of various kiosks, shops, and cafes. Um... Café...? ? ? ? Sheng Yu's eyes widened immediately, as if to prove his conjecture, a certain blond and dark-skinned man looked at him and showed him a smile. Sheng Eucalyptus:………… Barbie Q'ed the family! ! ! ! But the surprise is far less... Purpose: To survive in the world of science