Plot
The story begins with Rena and her husband Ichijima Ryota who are on their honeymoon in Finland. There, they see a lot ofCharacter
Human
;: Rina's younger twin-daughter, adopted by Shinobu. 14-year-old girl with the ability of Dragonslayer. ;: Mona's older twin-daughter, adopted by Shinobu. She contracted a mysterious disease called that reverses the time-space continuum of the patient. Despite being 14, she looks like a 9-year-old. ;: Took in both Rina and Mona after the death of their mother. ; :Superstar actor and singer.Demon
;: A demon with the appearance of a unicorn. Tamed by Rena, his "Sacred," he was sad at the fact that Rena would not grant him perpetual peace when she died, but has since decided to lead the other demons in search of other Edens and of Rena's reincarnation after the main events of the story. He has the appearance of Mika Valaska, the Finnish music composer that Rena idolized. ;: A demon of type apocalyptic demon. He was lured into the human world by Mika, then tamed by Mona. As he grew (through resting), he realized that Mona is his "Sacred." He has the appearance of Keito Fujina, Mona's idol, hence his name.Special Terms
Demons
*: According to Mika, the strongest demon. *Apocalyptic Beast: The second-strongest demon. K2 is the only one of this kind. *: Not very strong but intelligent and long-lived. Mika belongs to this type. * (lit. ''strange creature'') * (lit. ''demons, devils, ogres or trolls'') *Kakoku * (lit. ''demon, spirit, or monster'') * (lit. ''bewitching spirit'') * (lit. ''devil'') *: Shuu belongs to this type.Humans
; The phenomenon in which people (and other living beings) on Earth that are not (see below) disappear after coming into contact with a demon. ;Chain People who have the ability to summon demons to obey. They give a demon its name and appearance and are able to command the demon. Such people are very rare, about 1 in 100,000~1,000,000. They are also immune to Return Syndrome. Furthermore, the following principals concerning "Chains" hold true: #A demon cannot go against the sincere wishes of its "Chain." #A "Chain" may bound many demons. As a result, demons often seek "Chains" bound to other demons after detecting their presence. #A demon cannot bind to a "Chain" already bound to a demon of higher rank, since the higher-ranked demon would eat the lower-ranked demon before it can attempt to bind to the "Chain" out of possessiveness. #A demon cannot bind to another "Chain" so long as its "Chain" is still alive. #A demon cannot hurt or kill its own "Chain" ; A "Chain" special to each individual demon that is able to grant the demon "death" through words of love.Further reading
*External links