Here are a few possibilities for what it might be:
Here is a solid write-up regarding this identifier and its associated title. rj01266526
Features objective-based gameplay, such as finding specific items or performing "missions" like slipping something into her tea to progress the scene. Here are a few possibilities for what it
The protagonist, frustrated with his golf skills (or lack thereof), decides to take lessons to improve his game. He enlists the help of a female golf instructor. As the lessons progress on the quiet golf course, the dynamic shifts from a purely student-teacher relationship to a much more intimate one. The narrative follows a linear path focused on the seduction and subsequent relationship development between the protagonist and his instructor. He enlists the help of a female golf instructor
The prefix is specifically used by the Japanese database Erogamescape to catalog adult games. This numbering system is widely used by enthusiasts and archivists to ensure accurate identification of games, as many titles can be generic or share names with other works. The code RJ01266526 definitively links to this specific 2008 Norn release, helping differentiate it from other games with similar titles.