In return for a business loan of 50 million yen, the prestigious Kamiya family gave their daughter Haine away to the Otomiya family. Haine, now an Otomiya, is appointed to the student council of the exclusive Imperial Academy, a private school for the aristocracy. Even though Haine is of proper lineage to be on the council, she finds herself struggling to find her place among the many secrets of its elite members, especially those of the president who holds her heart - Shizumasa Togu, aka "the Emperor."

Haine has been in love with Shizumasa Togu from the day she read the picture book he wrote as a child. She enrolls the Imperial Academy to be close to him and is accepted as a member of the student council. But with that, dark secrets start to reveal themselves! Why does "The Emperor" act differently? Is Haine really in love with Shizumasa? Why did her father sell her and why doesn't her mother write to her anymore?

Includes the following extra stories:
• Kusame and Komaki and the Key of Love
• Shoujo Eve Ringo Jikake no 24-ji (Eve's Applework 24 Hours)
• Umi no Sakyuugi Yasoukyoku (Nocturne)