At Kiryuu High, an old rumor says that if two people confess under the cherry tree behind the library, their love will be forgotten by everyone-except them. No texts, no records, no memories. It's as if they never existed as a couple.
Tokuno Yushi, a disciplined top student with his entire life planned out, has never once broken a rule. Maeda Riku, a rebellious artist who refuses to be controlled by expectations, lives for the moment. One night, on a reckless dare, they test the legend.
The next morning, their friends-Fujuniga Sakuya, Hirose Ryo, Kim Daeyoung, and Oh Sion-don't remember them being together. It's like their relationship never happened. At first, keeping their love a secret seems exciting. But when even they start forgetting-their first meeting, the little things that made them fall for each other-they realize this isn't just a harmless rumor.
Now, racing against time, Yushi and Riku must find a way to break the curse before their love fades completely. But if even they forget each other, does their love still exist?