Mitsuha Shimamura

Name: Mitsuha Shimamura

Gender: Male

Age: 27

Occupation: Family restaurant manager

As a child, Mitsuha encountered real Shocker combatants alongside his older brother.

During that same incident he also came face to face with Bat-Man, a monster serving Shocker.

The experience left a deep trauma but also a powerful sense of conviction.

From that day on, he repeatedly warned people around him that Shocker truly existed in the real world.

No one believed his stories, and he was treated as someone who was exaggerating or fantasizing.

This long period of being ignored and dismissed helped shape his stubborn personality and strong desire to prove himself.

Mitsuha grew up in a household where Kamen Rider was more than just a TV show.

His older brother fixated on Kamen Rider V3 in particular and made that identity “his own.”

Mitsuha wanted to become Kamen Rider V3 too, but his brother would not yield that role.

The two constantly fought mock battles over who would be V3, turning their rivalry into a daily training regimen.

At first Mitsuha lost every time, clearly outmatched by his brother.

By the second year of junior high, however, he had trained enough to fight almost evenly against him.

In their final decisive clash, Mitsuha was defeated and had his left arm broken.

This painful loss became a turning point, forcing him to let go of the dream of becoming V3.

Instead, he settled into the role of Rider Man, the Kamen Rider who uses a mechanical arm.

Over time he embraced this identity so fully that he came to declare, “Rider Man is the most passionate of all Kamen Riders.”

In battle, Mitsuha wears a Rider Man-style mask and equips a cassette arm.

Unlike the original Rider Man, who wears the cassette arm on his right arm, Mitsuha mounts his on his left arm.

The choice of left arm is directly tied to his childhood defeat and broken left arm.

By putting the mechanical arm on that side, he symbolically overwrites his past loss and turns it into a source of strength.

His fighting style is built on a base of aikido, emphasizing throws, joint locks, and redirection of force.

Combined with the versatile cassette arm, he can adapt to close combat, mid‑range grappling, and improvised weapon use.

Mitsuha fights not only with physical techniques but also with a strong personal philosophy.

For him, taking up Rider Man’s mantle is a way of honoring his childhood struggles and reclaiming his own identity.

Mitsuha first becomes involved in the main storyline immediately after Tanzaburo Tojima and Yuriko Okada encounter real Shocker combatants.

Right after this shocking first encounter, Tojima and Yuriko enter the family restaurant where Mitsuha works as manager.

This timing thrusts Mitsuha into the conflict he had been warning people about since childhood.

The arrival of actual Shocker combatants in his workplace proves that all his long‑ignored claims were true.

Faced with real enemies, he dons his Rider Man mask and cassette arm and engages in battle.

The restaurant manager everyone underestimated reveals himself as a serious combatant shaped by years of practice and obsession.

Mitsuha blends everyday normalcy with a quietly intense inner world.

To customers he is just a polite, efficient manager, but inside he carries the weight of childhood terror and a burning need to be acknowledged.

Being repeatedly dismissed when he spoke about Shocker made him suspicious of easy reassurance and shallow optimism.

Instead, he values concrete action, personal resolve, and the courage to stand by what he believes, even when mocked.

His admiration for Rider Man reflects this worldview.

Rider Man is not the most glamorous or overwhelmingly powerful Kamen Rider, but a flawed human who chooses to fight anyway, and that resonates deeply with Mitsuha.

By declaring Rider Man “the hottest, most passionate” of all Riders, he is really affirming his own way of living.

Mitsuha’s identity as Rider Man’s spiritual successor is both a coping mechanism and a genuine heroic ideal he strives to live up to.