Boku wa Kohitsuji?!

Saint Emanuel Academy is a missionary-based dormitory system high school with the motto "Love for all things". However, it has one dark tradition. Once a year a "carnival festival" is held there. Seven new students are selected as targets and have to do anything the teachers desire. Main character is selected as the last of the seven people. Without knowing that he confesses to his classmate. It depends on the player's choice whether main character has to go through the trap or find love with the classmate in two weeks time.

[From vndbreview]