"The Strongest Rider" (最強ライダー, Saikyō Raidā)
While the action is flashy, Episode 1 plants a dark seed. The ZECT advisor, Riku Kagami (father of the secondary protagonist), reveals the secret of the "Red Shoes System." This is an automatic programming inside the Kabuto suit. If a Worm mimics a human, the Red Shoes will force the Rider to kill the host along with the Worm—human sacrifice be damned.
Tendou ignores this warning. When the Worm uses a human shield, Kabuto hesitates... and then uses a kick that phases through the human to destroy the Worm. This moment showcases the genius of the writing: Tendou rejects the system's cruelty, establishing his moral code without a single line of sentimental dialogue.
If the Cast Off was the reveal, the Clock Up was the revolution.
As the Worm tries to escape, Tendou triggers the next phase. The world freezes. Raindrops hang in mid-air like suspended diamonds. People stop moving. The only things still in motion are Tendou and the Worm. kamen rider kabuto episode 1
This ability allows the Riders and Worms to move at hyper-speed, effectively stopping time for everyone else. The fight choreography shifts from slow, deliberate blows to a blur of supersonic kicks and counters. Tendou dispatches the Worm with a brutal Rider Kick, then returns to normal speed as the rain continues to fall.
For viewers in 2006, this was a game-changer. The "Clock Up" effect became the signature of Kabuto, influencing countless action sequences in media that followed.
The first episode introduces the protagonist, Shotaro Hidari, a 16-year-old high school student who lives on the remote island of Kokubu, located off the coast of Yamaguchi Prefecture. Shotaro's life takes a dramatic turn when he encounters the Worms, monstrous creatures from another dimension known as the "Heavenly Realm" or "Gaea" that have begun invading Earth.
During a battle between a Worm and a group of Zanki (insect-like humanoids who serve as the Worms' underlings), Shotaro's right arm is severely injured. He is saved by a mysterious old man named Tengan Ekoji, who gives him a magical device known as the "Driver" and a "Zapping Ghoul" card. "Grandmother said this
When activated with the card, the Driver allows Shotaro to transform into Kamen Rider Kabuto, a powerful warrior equipped with various abilities and weapons derived from the form of a beetle (kabuto in Japanese).
The episode sets the stage for Shotaro's journey, who not only seeks to protect his island home and its inhabitants but also aims to find a way to regenerate his injured right arm. Throughout the series, Shotaro, along with his friends and allies, confronts various Worms and uncovers the mysteries behind their invasions and the true nature of the Driver.
The episode opens with a flashback to 1999, when a giant meteor dubbed the "Shooting Star" is on a collision course with Earth. The Japanese government, anticipating impact, scrambles disaster protocols.
Instead of a catastrophic extinction event, the meteor breaks apart in the atmosphere. Large fragments crash into various locations, including a rural riverside. A young Souji Tendou is there with his grandmother. A massive chunk of rock lands nearby, splitting open to reveal a strange metallic object — a silver belt-like device. Inside the meteor fragment, alien worms writhe and begin to emerge. The scene cuts to a newscaster reporting the
Tendou’s grandmother takes the belt and hands it to him:
"Grandmother said this... 'Walk the path of Heaven, and rule over everything.'"
The scene cuts to a newscaster reporting the event as "the meteor that fell in Shibuya" — implying a cover-up.