Who wrote 컵케익 and 무지개, 레인 보우 Factory?

I have written the story, Breaking the Fourth Wall, and I want to credit them, because I have used some of their ideas, 의해 blended them in this huge mesh up of that world. The intent of this story, is to tell a back story where all of our 프렌즈 have been controlled 의해 a curse created 의해 someone they are all familiar with.