Twelve year old tennis prodigy, Ryoma Echizen attends the distinguished school of Seishun Academy Middle School with his eyes set on being on the regulars team of the tennis club, which the school is famous for.

High school student Kasumi Ogino is a member of the school choir and after years of praise for her singing voice thinks she is the absolute bee’s knees. When the object of her desires, classmate and photographer Junichi Makimura, asks Kasumi is he can photograph her singing she accepts, thinking this means she is beautiful as well. However the end result is a comical shot of Kasumi with her mouth wide open, which Makimura likes to a hungry salmon! Distraught by the ensuing humiliation, Kasumi quits the choir, until she is encouraged to return by an unlikely counsel - the brutish leader of thuggish rival all male choir, Hiroshi Gondo.

Ryo Hanaki was raised to be a professional assassin. One day he was defeated by some accident in the mission. Here he meets Rio, an attractive high school girl. He spent days as a heartless assassin, but his life starting changes after he helps Rio. By a twist of fate, Rio who was a complete unknown became an assassin target overnight. A single mistake from his decision to save Rio decided the destiny of the masses...

Ichitaro is a young man with weak health who has the power to see ghosts. Since the age of five, he has become friends with them, and works with them to solve mysterious incidents.

Meiko and Taneda are a couple graduated from university two years ago. Unhappy with their lives, Meiko quits her job and encourages Taneda to have his band become professional.

Mei has been in love with Yuya all her life. They've grown up together. But when they reach their second year of middle school, Yuya suddenly professes his love for her older sister, Haruna.

The story of Teke Teke, the ghost woman with no legs, continues. Conflict arises between a group of high school classmates, and Teke Teke starts hunting them down one by one.

Brought on by popularity for the series, this DVD Special feats. two half-hour side stories that take place during the events of the show. Both stories appear to take place just after episode 20, the first episode of the Helheim Saga. The Kamen Rider Zangetsu side story begins with Takatora telling Kota about the truth behind Helheim. While a childhood friend pays Takatora a visit, a mysterious Kamen Rider that has control over cracks begins to hunt down Yggdrasill’s forces. The Kamen Rider Baron side story begins with Kaito seeking out the Overlords for Professor Ryoma. A prince visits Zawame and when he finds out that Kaito looks exactly like him, he decides to forcefully switch lives, resulting in conflict.

Tonoin Kei, a musical genius, becomes the new conductor of Fujimi, clashing with the group's leader, Morimura Yuuki, who is unaware of Kei's feelings for him.

Based on the comic book series of the same name by Akio Chiba.