Framed for his family's murder and left for dead, an ex-hitman will stop at nothing to exact revenge on the masked "demons" who have taken over his city.

Blamed by some, hailed as heroes by others, those involved with Fukushima Daiichi face a deadly, invisible threat — an unprecedented nuclear disaster.

Masaya Kakei is a university student, but he attends a school that's not his ideal school. His days are generally gloomy. One day, he receives a letter from serial killer Yamato Haimura, who was convicted for eight murders and received the death penalty. Back when Yamato was committing his murders, he ran a bakery store. At that time, Masaya was a middle school student and a customer at his bakery store. According to the letter, Yamato confessed to committing the murders, but he insists that he did not commit the last murder. Masaya begins to investigate the last murder case involving Yamato.

In 1879, Kenshin and his allies face their strongest enemy yet: his former brother-in-law Enishi Yukishiro and his minions, who've vowed their revenge.

Sent to spend the summer in a sleepy seaside town, sickly Anna befriends a curious girl living in a deserted villa. But is their connection real?