Kamen Rider Hibiki

Asumu Adachi and his mother went to Yaku Island for a family reunion. During the boat ride to the island, Asumu meets a man named Hibiki, who has just saved a child from going overboard. On Yaku Island, people are disappearing in the forests and Hibiki goes in to investigate. In the forest, Asumu and his cousin meet Hibiki and also run into a pair of demons known as Douji and Hime of the Makamou. Hibiki goes to fight the Makamou and transforms into an armored figure called an Oni. When cornering one of the Makamou, Hibiki is seen by Asumu.

Hibiki spends the night at the memorial where Asumu is staying. The next day Asumu meets Hibiki out by the beach and they both talk about what Hibiki does for a living. Asumu witnesses Hibiki transform into the Oni to fight the Hime and her child, a demon-spider called Tsuchigumo. After the fight, Asumu begins to take a liking to Hibiki.

Both Asumu and Hibiki return to Tokyo where Hibiki is sent off to defeat a Yamabiko sighted at Okutama. Later on, Hibiki meets Asumu's mother, who is ecstatic to see him. The strain of studying for entrance exams begins to trouble Asumu as he worries about Hibiki and how safe he is with the type of job he has.

Asumu trails an old man whom he believes has connections to Hibiki after he sees him save a young girl. Elsewhere, Hibiki continues his battle with the Makamou who had been killing people in the forest. After the battle, Hibiki and Kasumi return to Tachibana's sweet shop, where Asumu and the old man are.

Hibiki and Asumu have a talk about the school that Asumu wants to go to. At school, Asumu is told by a teacher that if he fails his entrance test to Johnan, he will have no second chance so he must not fail. Hibiki is then told of a Makamou, called Bakegani, that has been attacking ships and defeated a fellow Oni, Zanki. He goes to fight the Hime, but was overcome by the Bakegani and is forced into the sea.

Ibuki, thinking Asumu is Hibiki's student, takes Asumu to where Hibiki and Kasumi are located. Hibiki and Asumu have a discussion about life and the challenges that everyone faces, leaving Asumu with a renewed passion to do well on his entrance exams. Hibiki then returns to battle the Bakegani that defeated him previously.

Ibuki appears and mistakes Asumu for Hibiki's student, taking him to the sight of a battle. Asumu then joins Hibiki and Ibuki on a trip to defeat an Ittanmomen at Okukuji, where Asumu meets Ibuki's student: Akira Amami.

An irritated Akira tells Asumu that he will only hinder Hibiki if he continues following him around and that it would be best for him to leave. Asumu wonders just how true her words are and asks Hibiki himself how he feels about it. Ibuki then defeats the Ittanmomen and Akira and Asumu make amends with each other.