I Really Just Want to Open a Shop [Across Realms]

Lu Sinian was bound to a retail shop that could travel between planes. He opened his beginner's gift pack. [Congratulations, Master! You have received ten bottles of cola, ten bags of potato chips, a small bag of durian candies, and a box of adhesive bandages.] [Cola: An ordinary bottle of fizzy water, though it might have some extraordinary effects.] In a Western fantasy world, a swordsman drank the cola and advanced on the spot, his face full of alarm. "Could this be a demon's drink?!" That unique flavor, those bubbles bursting in his stomach... Nothing in the mortal world could compare! Lu Sinian asked hesitantly, "How... do you feel?" The swordsman's body shuddered. This was a question from a demon god! "Your faithful servant is safe and sound. I will surely spread the divine will throughout the world and follow your wishes!" Lu Sinian: "?" Later, he became the most famous demon god on the continent. They said he had a divine liquid that fizzed with mysterious bubbles, capable of helping warriors break through their bottlenecks. They said he had magical sticks with a wondrous flavor, capable of increasing a mage's magical power. They said he had a demonic candy whose foul stench lingered, capable of soothing a frenzied mind. Lu Sinian insisted they were just cola, potato chips, and durian candies. He really was just an ordinary merchant who had opened a little general store! Reader's Guide: A plane-trading story, satisfying and feel-good from beginning to end. Pairing: Protagonist x System Theme: Strive for a better future, and never give up through life's storms