コクラセ

The Kokurase gang, also known as Cupid’s Helpers, is out to help freshman Sakura woo Yoshimitsu, a popular senior with every other girl in school vying for his heart. Switch between Genji the leader, the newest member of the crew, Riho, the mysterious Meg, and Kanta, the supernatural sleuth, to bring these two lovebirds together in an intertwining tale.
The game begins with Sakura pining for Yoshimitsu to notice her, which catches the ear of Riho and the gang, who quickly make contact and begin to draw up plans to bring the two together. Days of preparation pass culminating in a gambit to bring the freshman and junior together, requiring the player to execute a series of intricate tasks involving all characters.

Steam