Everyone: Starting Contract Succubus Queen

"Talking about learning to sing, I am Dou Chang." "Eighteen years ago, I traveled to Blue Star." "This place is full of alien creatures, copies, secret realms and abyss." "This is an era where everyone is changing jobs." "Every human being over the age of 18 acquires an innate skill through awakening a profession." "A-level and S-level talents and skills are unique and are called the seventy-two sequences." "And when I awakened as a warlock, I thought I would spend my life like an ordinary person." "Until I discovered that my system seemed to be integrating these seventy-two sequences." "Also, I'm not human..."