After four years overseas, Shozo returns to Japan to avenge his yakuza boss who was assassinated by his own treacherous top man, Kurawaki. The resulting battle leaves both men severely injured, and Shozo awakens in a mysterious medical facility to find his arm replaced with an M61 Vulcan cannon and his leg replaced with a rocket launcher. Meanwhile, Kurawaki has been fitted with mechanical augmentations of his own. Get ready for the second round.

A boy who suffers from impaired hearing and a young girl pianist try to solve the mysterious connection between a series of murders and the boy's entangled memories.

Ayane, who has transferred to Seiran Girls' Academy, is troubled by her strange auditory hallucinations. Before long, she had a series of unnatural deaths and disappearances around her...

A young man suddenly rises to the top of the underworld in Shinjuku, Tokyo. Other crime bosses now conspire to take him down.

The man who is an assistant hairstylist makes an effort to keep his promise by cutting his first love's hair as his first customer. But she has little time to live due to her severe illness.

An emotionally damaged girl is taken in by a married couple, the Takanashis. Shortly after the start of their happy family, the journalist wife is killed. The villainous forces that murdered his wife now come for Takanashi and his adopted daughter. In order to protect the girl so precious to him, Takanashi stands against them with his karate.