She is a playful mermaid, and he is the master of the demon world. What will happen when she travels to the demon world? The heroine has big golden fingers. This article is a bit centered on the heroine. To put it simply, the heroine is beautiful, the heroine is strong, and the heroine is the best in the world. This is the author's first time writing an article, so everyone is welcome to catch bugs (^O^) Mary Sue.