Kensho Ono

For a thousand years, the Vikings have made quite a name and reputation for themselves as the strongest families with a thirst for violence. Thorfinn, the son of one of the Vikings' greatest warriors, spends his boyhood in a battlefield enhancing his skills in his adventure to redeem his most-desired revenge after his father was murdered.

Zen Seizaki, a public prosecutor at Tokyo District Public Prosecutors Office, is investigating a case of illegal clinical research related to a drug company and a university. During the investigation, he finds a file that Shin Inaba, an anesthesiologist, kept, which includes blood that is mixed with hair, skin, and a paper written with letter F. As he investigates, he realized there's a hidden plot that is connected with a huge election as well as to a certain person who is in charge of it.

In an isolated region of Kyushu lies the town of Suiten. Though seeming small and modest, Suiten is not a picturesque place for a vacation, unless it is from the “Unseen World”. Taro, Makoto and Masayuki, three boys with traumatic pasts, learn to let their souls cross between the two parallel worlds. However, the Unseen World is no mere copy of the real Apparent World. The Unseen World is the home of ghosts, but changes are now allowing the souls of the dead to pass over into the Apparent World, with unpredictable effects. Follow the journey of Taro, Makoto and Masayuki, as they cross between the two worlds, trying to unravel a great mystery.

A foot soldier faces obstacles and challenges as he sets out to take down the Dragon Keepers.