ローゼンメイデン ヴェヘゼルン ジー ヴェルト アップ

The game follows the life of Jun Sakurada through two separate paths in the visual novel, where he can chose to wind up Shinku, or not. Doing so will allow him to be her master and the game will follow him through the Middle School Route. Choosing not to do so will send players down his college route.

[from Wikia]