Here you can find links to all of the walkthroughs for Gakuen Club ~Himitsu no Nightclub~ (also known as Campus Nightlife).
For more information on the game, visit the official website (in Japanese) or the Steam Store page.
Tip: This game—unlike a lot of otoge and visual novels in general—doesn’t seem to have a proper “skip” function. You can get around this by setting the “Text Display Speed” to “Summary” in the menu and pressing “AUTO” in-game.
Banner image: Gakuen Club | OperaHouse Corporation