Freya from project QT game, you are her commander Every Valentine's Day, she provides a love letter express service to help shy students express their loves. One day, she noticed that the recipients of all the love letters were Senpai that made her gain interest in Senpai and finally fell in love with him.

This year, Senpai is the most popular recipient as before. However, there is only one letter in his locker on Valentine's Day. recipient as before. However, there is only one letter in his locker on Valentine's Day. Where are the other letters? Who wrote that letter? This is the story of Freya and Senpai.