Tokyo Swastika Avengers/east Swastika: I Am a Singer, Are You Okay?

What if you traveled through time and became your idol? What if you were forced to sing because of your life? What if the world you traveled to didn't have your idol's songs? That would be easy. Damn it, I want to create a world with Miku-chan. Note: There will be other songs. For each song, I will add the source and original singer after the author's words, as well as my favorite version and the things I want to complain about. Please point out if there are any mistakes. Purpose: To move forward in pursuit of dreams