As Akito Hayama - Sana's young boyfriend prepares to move across the globe, Sana suffers a mental breakdown of sorts. Her face is expressionless, she has no appetite, she falls into a deep sleep at odd times, and she can't even remember Hayama at all. Everyone is worried about her, and even the doctors don't know what to do. Could Hayama be the only one capable of mending her broken heart...or might it be Sana's longtime friend Naozumi? In this final volume, Hayama and Sana's future is finally revealed. Will they be together forever...or will their love simply become a distant memory?