It is an adaptive story of "Paradise Lost" by Toru Naomura where revolves to a life of a certain transferee student, Himoto Sora with a full sense of justice and dreaming to become a knight.

What if it is really her destiny to become a knight to a certain university called Utopia Academy where there is a virtual-reality like game which only played by the male student that they use girls as weapons in battles for status and also treat them as commodities. Seeing these girls are being abused, she step in and unwittingly becomes the first female participant of the game.

Main Characters

Im Yoona - The Knight

The only female who can be able to Exaclan game, she is honorable at the same time a bubbly person. Her heart is pure as white pearl that she despise unjust and any evil doings. Her dream is to become a knight and to protect the "princesses", she even tells "Ix" when asked to "possess and protect" that there is no way should own a princess.

Jessica Jung Sooyeon - Yoona's childhood first princess, Princess Ix, Lightning Sword

A mysterious best friend of Im Yoona and a very cold person. She is the "brain" of Im Yoona, she is owned by the student council and claims that this allows her to collect information about Exaclan, but the truth is she is secretly sub-chief of Exaclan and maybe responsible for Yoona being able to be participate the game. Jessica monopolizes Yoona as her knight because she is the only one who can fully understand her, that is why she asked Yoona when they were young to save only "girls" because they are "princesses".

Stephanie Hwang Miyoung - Yoona's official first princess, Dual-Barreled Rifle gun

She is the first official princess when Yoona become part of the Exaclan game. She is fully devote herself to Yoona and plans to help her. She has a docile and a very sweet personality and easily embarrassed. She is very fond of Yoona and often absorbed by her vivid fantasies about her. As the story goes she doesn't accompany Yoona unlike Taeyeon and Sooyoung. Her previous owner was Siwon who is part of the student council. She carry one of the "six stars" or the "apple".

Seo Joohyun - Yoona's second princess, Dagger which transforms to Japanese Katana

She is the first girl that Yoona notice when she enter the Utopia Academy and observed in battle. She was afraid to stand up for herself but was given hope when she met Yoona and Tiffany. She spend as bed-ridden due to her severe injuries inflicted by her former owner. She do the research and tracks the records of the school. She is well-mannered and kind but has a mischivious streak. Her warm exterior hides her lack of confidence and weakness. Her weapon is a weak dagger but thanks to Jessica's hacking skills that it transform to Japanese Katana. 

Choi Sooyoung - Yoona's third princess, Spear

The first girl Yooona was given to Donghae. She don't want in the minority and also could not handle the bullies so she asked Yoona to release her. But "El" tell Heechul to torture her until the very last moment of "final stage penalty" warning. Later she was released by Donghae and possessed by Yoona again as she rescued her in the woods. She becomes very attached to Yoona and occationally possessive, and they share the same personality when it comes to food. She is close with Taeyeon since Yoona always bring the two of them. She also carry one of the "six stars" or the "apple".

Kim Taeyeon - Yoona's fourth princess, Medieval Flail

She is used to be Leeteuk's possession, vice president of the student council. Leeteuk loses a match against Yoona on purpose to pass Taeyeon on her. But to the other girl's surprise, Taeyeon badly wants being owned by the student council. Her reason is due to her past to be revealed later on as the story goes. She believes serving a powerful man can manipulate things so that the girls in Utopia Academy would be set free. She possesses a very independent personality and she solve things on her own and wanted to fight the wrong system of the academy. Later on she asked Yoona to release her and find her way back to Leeteuk she became hostage and tortured by YeSung. But as Yoona saw her very injured so badly she rescue her by using the "penalty warning" and she become infatuated to Yoona. She also carry one of the "six stars" or the "apple".

Kwon Yuri - Yoona's fifth princess, Large Axe

A girl who initially depicted being "madly in love" with Yoona the moment Yoona rescue her to her owner YeSung, but it turns out that it is just part of an act. Then she deceive the group and also stole the records of the girls Yoona saved and she commanded YeSung to torture them. But it turns out that she was manipulated by YeSung so that she will not end up the same fate as her older sister. She also carry one of the "six stars" or the "apple".

Supporting Characters

Lee Donghae - Dark lord "El", President of the Student Council

Some rumour said that he is cold-hearted and very cruel, but it is only the persona to achieve the harmony among the student. He is called "El" or the dark lord in the fictional story of "Paradise Lost". He characterized physically by his eye patch and he orchestrates the Exaclan system. He also possessed one of the "six stars".

Park Jeong-su [Leeteuk] - Vice President of the Student Council

He is very gentle and kind. He possesses one of the "six stars" which is Kim Taeyeon.

Kim Heechul - Part of the Student Council

A gay man who is madly in love with "El". 

Cho Kyuhyun - Part of the Student Council

The person who cares for "El" so much to the point that he called him his "god".

Lee Hyuk-jae [Eunhyuk] - Part of the Student Council

He is always with "El" and he has connection with the founder of the Exaclan, SME group. He is very secretive like "El" and they use to share it with each other.

Lee Sungmin - Part of the Student Council

All talk and no power. He is distantly related to Jessica through his father.

Choi Siwon - Part of the Student Council

He is in love with Tiffany but he don't know how to express it. He used to own Tiffany but when Yoona came and be able to join the game of Exaclan, he always lost to her and Yoona save Tiffany from his assault to her. He usually treats Tiffany a mere object and abuse her physically. 

Kim Jong-woon [YeSung] - Part of the Student Council

He is an insane guy and he torture a lots of girls in the academy. He also hostage Kim Taeyeon and torture her badly before Yoona rescued her. He believe that he save Yuri by directing her anger away from the SME group so that she would not have to same fate as her older sister.