The JK×JK version has a complex status. The original version (with the subtitle JK×JK ) might be region-locked or removed. However, the game's unique premise has ensured its survival in online archives.
Given the “Free Do...” portion, you may be searching for a or “Free Dōjin” (doujin/fan-made) version of this game. Hechima ni Koi Suru Joshikousei -JK-JK- Free Do...
According to the official database entry on VNDB (Visual Novel Database), Hechima ni Koi Suru Joshikousei is a niche visual novel centering on a unique and quirky romance storyline. The JK×JK version has a complex status