A Moonlit Night by the Lonely River

After a breakup, college student Jiang Yue accidentally transmigrates to the Demon Realm and begins a life of unrestrained brutality. Jiang Yue: Am I supposed to fight monsters and level up? Survive tribulation and ascend? Unite the Demon Realm? Great Demon: A weakling like this is hopeless... Jiang Yue: And I have a cheat, too... Unable to make it in the Demon Realm, Jiang Yue finally decides to open a noodle shop. Demon: Boss, one bowl of spicy hot pot, please. Jiang Yue: How much are you paying? Demon: Six demon coins. Jiang Yue freezes, then immediately leads the customer inside...