Ugh, well I got to chapter 25, between the fact that Grayfia is not in the harem and that you unnecessarily change the gender of the characters, since there are so many female characters, I didn't like it, good luck in the fanfic too. .
you should add the black dog longinus dude as his knight, and lavinia and rosswiese as the bishups, the fallen angel trio as his pawns his familiar could be tiamat, idk for rook tho or the other knight