Fight Monsters and Upgrade to Become a Demon Concubine

The person she liked regarded her as a pawn. She wanted to be alone, but she didn't expect that she was a Xiangbobo. After completing a mission, she was suddenly pulled into another world by the Demon God. With her cheating skills, she fought monsters all the way and was promoted to the Demon King. However, one day she was announced by the Demon God that she was his Demon Concubine. Damn it, how is that possible! The relationship between her and him was obviously one of using and being used.