Genshin Impact: Game Box System

Tales speak of a mysterious shop with an owner just as mysterious, if not even more so, than the shop itself. A scam they called it, but those who know the true value of the items and abilities held within those simple yet deceptive boxes on the shelves know just how terrifying the owner of this shop must be. A weapon that cuts through space. The ability to live eternally. Even the blood of gods. However, those are mere but common items in the owner's eyes, the real treasures exist behind the walls of the Diamond Box. You can't just buy it though, no amount of Mora in the world will make the owner stir, you just need to beat him in a game. Sounds easy... right? . . . Pairing: Male OC x Lumine/Keqing/Ganyu Word Goal: 2000-3000+ Words/chp