Shinichirō Asano (Master)
Ibuki Kido (Japanese)
Sakuya Shimazu (島津 朔邪 Shimazu Sakuya) is the main female protagonist of the series. She is a second-year high school student from a rich family operating to seal spectors.
Sakura is a young, fair-skinned girl who always wears her normal second-year high school uniform. She wears a red and yellow bow in her blond hair in a hime-style.
Sakuya seems to be what people call a tsundere. She can get easily embarrassed and uses violence to stop being embarrassed. She has great potential and refers herself like a "rich girl" because of her abilities. Sakura has a fear of rats and cockroaches.
She is the temporary 37th heir to her family bloodline. She doesn't seem to have a good relationship with her family and refuses to live with them.
Archery : She is a master Archer.
After Shinichirō Asano discovers that her 'True Name' is Isuca she becomes unable to disobey him, in order to save face with her family she forces him to become her fiancé - even if in name only she also has feelings for him.