For It Is In Passing That We Achieve Immortality

Look, we all know what an isekai story is, and I'm sure you can guess from the tags exactly who's involved, but just to be sure: the blonde noodle dies at the end of Volume 3 of RWBY instead of Pyrrha, and gets isekai'd to Camelot. A spin-off of All The Difference In The Worlds to mark the one-year anniversary of it, with exactly the quality you'd expect (read: none).