When dealing with Japanese indie (Doujin) games, the term "Patched" usually refers to one of two things. Understanding this will help you know what features are available:

: Corrected input mapping for modern VR controllers (Oculus Touch/Valve Index) to ensure all in-game menus are navigable.

The mention of "RJ01266526 patched" refers to a patch or an update applied to the game, identified by a registration or reference code ("RJ" codes are often used in Japanese adult content to identify works). Patching software is common in the gaming industry to fix bugs, improve performance, or add features post-release.

: In community distribution, a "PROPER" tag indicates that a previous version of the patch or release was flawed (e.g., it crashed at a certain point or had broken assets), and this version is the corrected, "proper" fix.

Mister Himitsu Shinnyuu VR (Patched ver101) – Informational Overview