Hey guys. I'll keep it short.
EDIT: I know the pictures are really big. I screenshotted from my PC so... yeah, sorry about that.
I changed Simon and Balmafula sprites and used Celia and Lede (both unused) to their respective places. No problems.
Then I changed Alma - Battle (14) with another custom sprite. I figured out that the Young Priest (the one after Simon) was used for Unit.bin and Wld4Face.bin, so I did the necessary adjustments (I replaced Alma - Battle with Alma - Event in the ENTD).
Placed my new sprite in the Military Academy. She appears to be fine, but this happens: (look at screenshot (2))
Then my background for saving turns into this: (look at screenshot (3))
I did not change the Knight sprite, whatsoever. It came out like that the moment the sprite appeared. I have a 6 hour save file that WAS NOT patched and did not have the new sprite. I'm not sure if that is the reason for the graphical issues. I also didn't go deep into the game so I'm not sure if there will be more of these graphic bugs in the long run.
Help please. Thanks.
You broke the 9 sprite limit
looks like an Egg from BOF 3