To use the English patch, you must configure Dolphin to load "Custom Textures".
Download the specific "English UI/Texture Patch" from community forums like Reddit's Sengoku Basara community or the Basara Fans Discord. Place these in the Load/Textures/[Game ID] folder of your Dolphin directory. 2. On a Real Wii Console Playing on a physical Wii is more restrictive: sengoku basara 3 utage wii english patch