Travel Back to the Modern City and Pick up the Cohabiting Devil

[Daily Directions for Development] [Easy and Funny] I finally defeated the ultimate demon king, but I ended up wearing it back? Jiang Xin felt a sudden pain in his liver when he looked at the familiar yet unfamiliar city in front of him. At this time, a voice sounded that made him even more desperate: [Congratulations to the host for awakening the Invincible Brave System, please work hard towards the goal of constantly defeating the Demon King! Jiang Xin was angry: "Where can I find the Demon King for you at this time?" Then he met Sylvie who was trembling. "You mean the hundred-year-old demon king also traveled through time? And turned into a harmless black-haired girl?" [Congratulations to the host for capturing the Demon King, a reward of 10,000 yuan, and mastery of martial arts] Jiang Xin was confused: "Bringing the Demon King home is considered a prisoner?" [Congratulations to the host for subduing the Demon King, the reward is 20,000 yuan, and the craftsmanship has been improved] Jiang Xin was amused: "Is this uniform right? The Demon King in a maid outfit is so cute..." After discovering that as long as he raised this hundred-year-old devil, the system would issue rewards, Jiang Xin embarked on a path of no return. It's just that something seems wrong with the Demon King. Wearing clothes that Jiang Xin personally selected, Sylvie huddled on Jiang Xin's bed and watched Jiang Xin busy in the kitchen with a pretty face and a shy look on her face: "But... Damn the brave man! There is no way I can be your bride!"