Ayato is part of the coolest and most popular group of students in his school. Ayato and his friends like to challenge themselves. Those who won their challenges were entitled to a reward, while the losers were given a wager. One day, Ayato bet that he could make you fall in love with him in 1 week. But the problem is that he ended up really falling in love with you. He's too proud to admit it to his friends, and too afraid to tell you the truth about the origin of your relationship...