IF YOU HAVE NOT INSTALLED THE HD UI MOD!
Download: https://www.nexusmods.com/onimushawarlords/mods/14
Step 1: Open Steam > Right click Onimusha: Warlords on your Steam games list > Manage > Browse Local Files.
Step 2: Place both "dxgi.dll" and "SK_Res" into the same folder your game.exe is located.
Step 3: Launch the game normally through Steam. You should be able to tell the mod is working by displaying the banner on top, or by looking at Samanosuke's UI orb from the start of this video.

Enjoy! :)


ALREADY INSTALLED THE HD UI MOD?
Step 1: Open Steam > Right click Onimusha: Warlords on your Steam games list > Manage > Browse Local Files.
Step 2: Open SK_Res folder > Inject > Textures
OPTIONAL: Make a backup of the files with matching file names in this folder, in case you'd like to revert the changes.
Step 3: Copy and paste all files within the downloaded mod folder, to the Texturs folder.
Step 4: Launch the game normally throguh Steam.

Enjoy! :)