Ntr Maid ~30 Days Where My: Exclusive Maid Is Cuckolded~ |top|
This is a known genre game in the “netorare” (NTR) category, where the protagonist’s exclusive maid is gradually stolen or corrupted over a 30-day in-game period, typically through choices that lead to cuckolding scenarios.
It seems you’re referencing a specific adult visual novel or doujin game title: (often abbreviated or found under similar naming on platforms like DLsite or DMM).