This usually resolves issues in text-heavy Visual Novels and RPGs immediately.
If you are experiencing issues where game UIs or dialogue boxes appear blank or contain "tofu" (empty boxes), you are missing the required proprietary font modules. vita3k font
Understanding Vita3K’s font subsystem reveals much about the PS Vita’s design philosophy and the legal/technical hurdles of emulation. This usually resolves issues in text-heavy Visual Novels
Vita3K requires specific system font files to render text correctly. If these aren't present, the emulator won't know how to draw the letters. vita3k font