Open your PPSSPP folder and navigate to memstick -> PSP -> TEXTURES .
To use the English texture pack, follow these general steps: Tenchu San Portable Psp English Patch
Unlike traditional "ISO patches" that modify the game file itself, most current English solutions for Tenchu San Portable are designed for the PPSSPP emulator . Open your PPSSPP folder and navigate to memstick
Mastering Stealth: The Tenchu San Portable PSP English Patch Guide Tenchu San Portable Psp English Patch
Create a folder named after the game's ID (typically ULJM05505 for Tenchu San Portable).