Anata no Shikihime Kyoudoutan English translation
あなたの四騎姫教導譚 · The Princess Guide
froid_san's English port for the Japanese PS Vita release of The Princess Guide, built from the text and images of the official English Switch version.
What it is
The Princess Guide was localised for Switch and PS4, but not for the Vita. froid_san brought the English text and graphics of the Switch release over to the Japanese Vita game, and redid most of the images with text so they stay readable on the Vita's smaller screen, along with a font fix.
Status
The port is still marked as a beta. The trophies and the digital manual stay in Japanese, and some text images may be cropped.
Playing it
The patch goes on your own copy of the Japanese Vita game, on a modded console with the plugins the creator lists, following the instructions in the release thread. It is also reported as playable in the Vita3K emulator.