In the ruthless underground world of the yakuza, no one is more legendary than boss Kamiura. Rumored to be invincible, the truth is he is a vampire-a bloodsucking yakuza vampire boss! Among Kamiura's gang is Kageyama, his most loyal underling. However, the others in the gang view Kageyama with disdain and ridicule him for his inability to get tattooed due to sensitive skin. One day, assassins aware of boss Kamiura's secret arrive from abroad and deliver him an ultimatum: Return to the international syndicate he left years ago, or die. Kamiura refuses and, during a fierce battle with anime-otaku martial-arts expert Kyoken, is torn limb from limb. With his dying breath, Kamiura bites Kageyama, passing on his vampire powers to the unsuspecting yakuza. As he begins to awaken to his newfound abilities, Kageyama's desire to avenge the murder of boss Kamiura sets him on a course for a violent confrontation with Kaeru-kun, the foreign syndicate's mysterious and seemingly unstoppable leader!

In 2012, Atsuya (Ryosuke Yamada) and his 2 childhood friends do something bad and run into an old general store. They decide to stay there until the morning. Late into the night, Atsuya sees a letter in the mailbox. The letter is addressed to the Namiya General Store and the letter was written by someone to consult about worries. Incredibly, the letter was written 32 years ago. The mailbox is somehow connected to the year 1980. Atsuya and his friends decide to write a reply and place their letter in the mailbox.

The story centers on a group of young people who travel back in time when they are in a movie theater just before closing time. They witness deaths during the closing days of Japan’s feudal times and on the battlefront in China before they are sent to Hiroshima just before the Aug. 6, 1945, atomic bombing of the city.

Kaori (Riko Narumi) is a intense kendo fighter who has been training since she was young. Sanae (Kie Kitano) is a girl who has only participated in kendo casually, but somehow manages to beat Kaori in the final tournament of junior high school. Although Sanae doesn’t particularly care about it, Kaori holds a grudge, setting up a rivalry that bleeds over into high school.

In the early 1990s, experiments were carried out secretly in Japan. Two different methods were used in the experiments. One method involved forcing stress upon expecting parents and when the baby was born, provoke the baby into mutations and develop their special abilities. The other method involved birth to babies having abilities of animals and insects. The special abilities were derived from gene manipulation. Subaru, Saya and others were born from those experiments.

Set within the Kaga Domain in the Edo Period. Oharu is an excellent cook and recognized for her skills. Due to her cooking talents, she marries Yasunobu, who is an heir in the Funaki family. The Funaki family serves as the cook for the Kaga Domain. Nevertheless, Yasunobu himself is a terrible cook. With the help of Oharu's mother-in-law Mitsuru, she begins to teach Yasunobu how to cook.

Yukihiko Nishino is very popular with women, but, in the end, he is always dumped by a woman. Yukihiko seeks out his true love.