Based on the title and ID provided, this refers to a specific 3D adult game/doujin title, likely . The "v112" indicates a specific version update, and "top" likely refers to the "top view" camera angle or a top-tier ranking.
The version number suggests the game has been patched or updated. Features often found in these updates include: idol jk chikan akushukai v112 rj01312785 top