The Patching Information section claimed that the patch requires a headered rom. This was definitely a mistake, so I changed it.
I added a header to the original rom and the patch produced a buggy uncensored sprite with stray pixels floating around the main character. Patching a clean headerless rom restored the uncensored sprite without any graphical errors, as shown in the screenshots. Plus, the readme itself doesn't say anything about a header, which further proves the uploader made a mistake when filling in the patching details.
This adds Epyon to the character select screen and allows it to be selected in the story mode. Simply highlight Vayeate and press right. This includes the Aeon Genesis translation, so just apply the hack to a vanilla headerless Japanese rom.
As of patch 1.1, a visual glitch with Epyon’s name has been fixed and it now displays properly in the character select.
ROM / ISO Information:
Database match: Shin Kidou Senki Gundam W - Endless Duel (Japan)
Database: No-Intro: Super Nintendo Entertainment System (v. 20210222-050638)
