I registered to Fandom so that I can help out with the data for this crossover series. I have yet to study Saga of Tanya the Evil, Overlord, and Cautious Hero. I am studying KonoSuba, Re:Zero, and The Rising of the Shield Hero when providing data from the respective series and Isekai Quartet. Unfortunately, deleting an un-wanted page is outside of my capability. Try bringing it up to the admin about the issue.