The protagonist, who is nicknamed "Senpai," is greeted by his Kouhai named Satou Kaori one day. They spent that whole day together. Kaori had something she wanted to tell only her senpai, though. Whether Kaori confesses or not depends on the choice her senpai makes.

The protagonist, who is nicknamed "Senpai," is greeted by his Kouhai named Satou Kaori one day. They spent that whole day together. Kaori had something she wanted to tell only her senpai, though. Whether Kaori confesses or not depends on the choice her senpai makes.