I'm listening to Gura's Loli Kami Requiem cover for the first time and holy fuck, was her Japanese pronunciation always this bad? The MV is good (I like the changing outfits) and the change from "Ui" to "same" is good but as a cover it's pretty rough.
Marine's cover is really good btw. That's unrelated but I wanted to say it. She adds her own twist to it, a sense of disgust to her voice and plays up the "hag pretending to be a loli" angle.