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- For the past version, see Asumu.
- For the A.R. World version, see Asumu (Decade).
Asumu Adachi (安達 明日夢, Adachi Asumu) is the main character of Kamen Rider Hibiki. For a long time, he was called Boy (少年, Shōnen) by Hibiki. After some time, Hibiki started to call him by his first name, before becoming his apprentice.
History[]
Hibiki[]
Asumu was on the way to the memorial service at Yakushima Island before his high school entrance exam until he met Hibiki on a cruise ship to Yakushima Island, where the latter saved a young boy from falling off the ship. On the island, they meet once again before parting ways. Asumu later left his family and traveled by car into the mountains for sightseeing, only to be attacked by Tsuchigumo. Hibiki saved Asumu but afterwards, he saw Hibiki transform into an oni and was interested in Hibiki ever since. But, after the incident, Asumu had little confidence in passing his exams to get into Johnan Academy and often sought advice from Hibiki. After graduating from East Shibamata Junior High School, he enrolled in Johnan Academy. He was placed in the same class as Hitomi Mochida and Akira Amami.
He would come to know the secret of the "Takeshi", because Hibiki said he is not willing to disciple, and did not have the feeling that he could after thinking he could do something else. He only works part-time in the days with no activity.
He had begun training with the introduction of Kyosuke Kiriya, who also wanted to be an Oni. He finally succeeded in apprenticeship under Hibiki. Hibiki had them compete with each other to decide which of them Hibiki would take under his wing. Asumu learns that being an Oni can only be learned through training with Hibiki, while defeating the Makamou.
Eventually, Asumu realized that being an Oni was not for him. He also quit his part-time job at Tachibana, aiming to be a doctor.
After that, he had communication with Takeshi, only to reunite with two Oni (Kyousuke and Hibiki) a year later. He was training to be a doctor with knowledge of the courage and training obtained when he was an apprentice. He was finally able to reconcile with Kyousuke, as a new teacher-student relationship for the rest of his life along with Hibiki.
Kamen Rider Hibiki & The Seven Senki[]
Asumu was saved by Hibiki when they faced a Makamou, which causes Hibiki to be injured. This leads Asumu to read the book that contains the history of the said Makamou, entangled with the history of the Takeshi and the Oni. He learns that his meeting with the Oni is no mere coincidence.
Personality[]
to be added
Forms[]
In the Hyper Battle Video, Asumu was able to assume the form of Kamen Rider Hibiki with the help of the Disc Animals.

Kamen Rider Hibiki
- Rider Statistics
- Rider Height: 7 shaku 3 sun[1] (approx. 221.2 cm., one say 222 cm.[1])
- Rider Weight: 41 kan[1] (approx. 153.8 kg., one say 156 kg.[1])
- Ability Parameters

Hibiki Kurenai
- Rider Statistics
- Rider Height: 7 shaku 3 sun[1] (approx. 221.2 cm., one say 222 cm.[1])
- Rider Weight: 41 kan[1] (approx. 153.8 kg., one say 156 kg.[1])
- Ability Parameters
- Punching Power: 8000 kan[1] (30 t.)
- Lifting Power: 700 man-power[1] (7 t.)
- Kicking Power: 13333 kan[1] (approx. 50.0 t.)
- Maximum Jump Height: 49.5 ken[1] (90 m.)
- Maximum Running Speed: 1 chō per 2 sec.[1] (100 m. per 1.8 sec., one say 2 sec.[1])
Hibiki's second form, also known as Hibiki Kurenai (響鬼紅, Hibiki Kurenai), was reached during the summer of training. It is exactly the same in appearance as his original form except that it is red instead of purple, and the face possesses a white plate-like mouth guard, with the "eyes" appearing black. Hibiki learned that he would be able to go beyond his basic form during the summer. At first, he was unable to reach this form completely, only able to transform his arms when under attack. This greatly drained him and caused him to begin tougher training.
Asumu has only used this form as a transition form into Armed Hibiki.

Armed Hibiki
- Rider Statistics
- Rider Height: 7 shaku 7 sun[1] (approx. 233.3 cm., one say 233 cm.[1])
- Rider Weight: 44.8 kan[1] (168 kg.)
- Ability Parameters'
Family[]
Behind the Scenes[]
Portrayal[]
- Asumu is portrayed by Rakuto Tochihara (栩原 楽人, Tochihara Rakuto).
Etymology[]
- The words that make up Asumu's name (明日夢) can be read as "tomorrow" (明日, ashita) and "dream" (夢, yume).
- Asumu's surname Adachi means "peace, quiet" (安) (a) and "achieve" (達) (tachi/dachi).
Notes[]
- Initially, the idea was that Asumu's apprenticeship of Hibiki would last for five episodes. He was apprenticed at the discretion of the Takada Temple.
- A producer's blog posted around the conclusion of Hibiki stated that Asumu was originally supposed to become an Oni, but due to last-minute rewrites (which came in during the filming of the final battle), plans were changed. The producer claimed that there was a fully completed "Oni Asumu" costume, but it was scrapped in order to make Kyosuke Kiriya's Oni costume look better.
Appearances[]
Kamen Rider Hibiki
- Episode 1: The Echoing Oni
- Episode 2: The Howling Spider
- Episode 3: Falling Voice
- Episode 4: Running Ichiro
- Episode 5: Melting Sea
- Episode 6: Beating Soul
- Episode 7: Majestic Breath Oni
- Episode 8: Shouting Wind
- Episode 9: A Squirming Evil Heart
- Episode 10: The Oni Who Stands in Line
- Episode 11: Swallowing Wall
- Episode 12: Revealed Secrets
- Episode 13: Berserk Fate
- Episode 14: Devouring Douji
- Episode 15: Weakening Thunder
- Episode 16: Roaring Oni
- Episode 17: A Targeted Town
- Episode 18: Unbroken Hurricane
- Episode 19: Strumming Warrior
- Episode 20: The Pure Sound
- Episode 21: Gathering Demons
- Episode 22: Becoming a Cocoon
- Episode 23: Summer Training
- Episode 24: Burning Crimson
- Episode 25: Running Azure
- Episode 26: Counting the Days
- Episode 27: Passing Down the Bond
- Episode 28: Undying Malice
- Episode 29: Shining Boy
- Episode 30: Forging Premonition
- Episode 31: Surpassing Father
- Kamen Rider Hibiki & The Seven Senki
- Episode 32: Bursting Song
- Episode 33: The Armed Blade
- Episode 34: Beloved Bonito
- Episode 35: Fallen Angel
- Episode 36: Starving Shuki
- Episode 37: Lightning Living Again
- Episode 38: Broken Ongeki
- Episode 39: Your Beginning
- Episode 40: Nearing Orochi
- Episode 41: The Awakening Teacher and Student
- Episode 42: Ferocious Demons
- Episode 43: An Unchangeable Body
- Episode 44: Forbidden Secret
- Episode 45: Dying a Glorious Death, Zanki
- Episode 46: Mastering the Oni Way
- Episode 47: The Talking Back
- Episode 48/Finale: Dreaming of Tomorrow
- Kamen Rider Hibiki: Asumu, Transform! You can be an Oni, too!!