(Professor × Student story) Kyrie Yvette Akerson lose her sanity, when she lost the man she loved. The man whose always been there beside her through ups and downs and treasures her the most. Her world turned upside-down, when she learned that his man cut his own breathe and leave the world in a young age. And, even his death still bothering her present life. This one time, as Kyrie visited his grave, a lady, who was have a magical power offered her something that could change her life and the life of his man. The offer is, she will become a lost traveller from present to past. She doesn't hesitate to say yes and sacrifice her life for him. But, the thing is... As the time spin counter-clockwise, everything changes. She doesn't expect that his man's sister interferes in their love story. Her heart beats changes, without even noticing it. Her dream to be his lover became a dream to be her lover. And, it is ironic, because his man's sister is their Professor. How would Kyrie face all the changes? Would she leave her promise and be with her Professor? A love witnessed by the sunset. A love that will hold millions of memories. A love that bloomed in the sand. And, a love that will embrace eternity.