Code: 04 of the Code Breakers. Toki's power revolves around magnetism, but later on he also exhibits the ability of mercury manipulation. When he loses his power, he takes the form of his younger self. He's the joker of the group, always fond of teasing people and has a propensity to tell outrageous lies (which fool no one but Sakura), but gets serious when it comes to his sister, Nenene's, safety. He's extremely popular with females and has a strong liking for breasts. He follows the Hammurabi code variation of "an eye for an eye, a tooth for a tooth and the hammer of justice for the wicked." It's later revealed that Toki and Nenene aren't blood siblings. When Nenene met Toki for the first time she was introduced as his older sister. The reason of that was because when Toki was born his magnetism was too powerful so they had to lock it up in "Pandoras box." The Prime Minister thought this was a waste and Toki is also "The Joker" of Eden. He is able to defeat a Rare Kind with his power. Nenene is a spare, another "Joker" Nenene was born by using "the apples of Eden" to create a child to hold the power. As a special power user's DNA greatly affects normal ones, Nenenes left eye was replaced with Toki's right eye. And so, Toki was given Nenene's left eye. After that she started to look like Toki and was able to use the power. Nenene was merely a vessel and Toki got his power taken away from him. Toki, however, couldn't know any of this and was told that only the older sister Nenene inherited the magnetism power from their father. Toki was thus undervalued and attempted to run away from him, until Nenene transferred half of her power (and accordingly, half of her life) to Toki to make him equally special. That's why Toki could use the power of magnetism before opening "Pandora's box." Later, she died protecting him from the Code:Name Saechika. (Toki thought the Re:Code Kouji was the one who killed Nenene for a long time, but it's later revealed that it was actually Saechika.) Nenene is still alive though and while she is in her lost state she doesn't know who Toki is. (Her mind is going back to her childhood). To her, Toki is still a little child. Still, Toki vows to protect Nenene with his life. It's later revealed that Toki is not his real name, but rather a name he adopted when he became a Code:Breaker.
An Ex-Code: Breaker, the former Code: 01 who was greatly respected by his comrades and subordinates, namely Oogami and Kanda. He is "lackadaisical and never gives a straight answer" according to Oogami. His power is electricity, which can be used to manipulate people. As Code: 01, Hitomi was greatly frustrated by the "non-existent" nature of the Code:Breakers, how they risked their lives fighting evil and yet died unrecognized. He left Eden, and later returned to kidnap Prime Minister Fujiwara (Toki's and Nenene's father) in a plan to publicly execute him, hoping to gain acknowledgement for the Code:Breaker's sacrifices. His plans were thwarted by the Code:Breakers, and he died in his Code:End—the eventual death guaranteed to all Code: Breakers in return for their powers.
Ikuno Komaki is Manaka's little sister who has a chronic illness that keeps her in the hospital. Prior to episode two of the OVA, her health improved and she was released, thus she was invited to the beach along with her sister. Ikuno is very supportive of her sister and she tries her best to support Manaka in her affection towards Takaki.
A girl who Shinkur� lived with when he was young and also his sparring partner. Her soft demeanor (albeit with yandere tendencies, triggered by other girls approaching Shinkur�) hides the fact that she is a strong fighter, whom Shinkur� acknowledges to be much stronger than himself, despite her being older by just one year. Yūno is upset that Shinkur� has not realized he was her first love. Even now, she still has feelings for Shinkur�, always finding excuses to spend time with him, such as cooking meals for him. However, her advances tend to be very threatening (most likely because Shinkur� always has another girl with him) and scare him into just letting her hear what she wants. Yūno resents the decision Shinkur� made in deciding to move out her household to live on his own and fears he will change into a hooligan. She has made it very clear that she wants him back in the H�zuki household. Yūno has a younger sister named Chizuru, who is five, who also has a crush on Shinkur�. Even though the H�zuki family are no longer assassins, their grandfather expects Yūno and Chizuru to carry on the H�zuki family martial arts. In the anime, Yūno is much more assertive in her advances towards Shinkur� and does not appear to have the yandere tendencies.
She is yet another tenant of the building Shinkuro lives in. She always wears black and calls herself a very sinful woman. She likes cats and usually keeps to herself except when it comes to Shinkuro and Tamaki. Her attitude can be considered sarcastic most times.
A woman who works as the middleman for the Akuu Company, a secret mercenary group of assassin and skilled individuals.