Kenja Sion

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Kenja Sion
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Gender: Female
Japanese Name: 賢者シオン
Chinese Name: 贤者紫音
Korean name: 현자 시온
Manga debut: Chapter 1
Light novel debut: Volume 1
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🎙️ Anime Voice Actor

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Yui Horie
Yui Horie
Japanese(Anime、Voice Actor)

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My Instant Death Ability Is So Overpowered
My Instant Death Ability Is So Overpowered
Release date: Jan. 5, 2024

Character Setting

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Kenja Sion is a powerful sorceress who summoned Yogiri Takatou’s entire class, including him, into another world. She has overwhelming magic abilities, with a level that exceeds one hundred million and rising every second. Despite her cheerful smile, she is merciless toward anyone she dislikes or finds suspicious. During her explanation about the new world, Yogiri fell asleep and unintentionally escaped her instant death spell. Kenja Sion’s unpredictability and cruelty put everyone around her in constant danger, as she can kill on a whim and easily reset her targets. She pushes her summoned group through severe tests for her own mysterious goals, leading them into dangerous situations. Her own arrogance and underestimation of Yogiri finally result in her shocking defeat and tragic end.

Kenja Sion is a young woman who always appears with a bright smile.

She has the presence of a high-ranking sorceress and granddaughter to a Legendary Great Sage.

Her physical wounds heal instantly, and even after injury, she can quickly restore her original appearance.

Kenja Sion acts cheerful and friendly, but hides a cold and ruthless core.

She does not hesitate to kill those who are a nuisance, dangers, or simply annoying to her.

Promises and rules mean little to her, and she can break agreements on a whim.

Her morals are twisted, and she treats lives as disposable when achieving her goals.

Kenja Sion was originally a Japanese person who became the Great Sage of another world after being transported there.

Her real name is Shion Ryuouin.

She is the granddaughter of the Legendary Great Sage Minaki.

With her unique skill, her level increases by one every time her heart beats.

She exists as a key figure behind the scenes, managing new candidates for the role of Sage by granting them gifts and pushing them into intense trials.

War Song

Kenja Sion can grant special Sage gifts to people from other worlds.

She can constantly monitor, influence the minds, and know the location of those who receive her gift.

No one given a Sage gift by her can oppose her will.

Regular Attack

Even her normal physical attacks are enough to blow off a regular person’s head.

Heat Ray

Her main offensive magical attack, which she can fire repeatedly.

It can erase most humans and creatures, but stronger beings like Mana’s kin can resist it.

Teleportation

She can appear or vanish at will, making her very hard to catch.

Level-Based Resurrection

Even if killed or mortally wounded, Kenja Sion instantly recovers and revives herself due to her level rising nonstop.

Regeneration

She can regrow lost arms or legs in a flash.

Pain Resistance

Thanks to her extremely high level, she does not feel pain when attacked.

This is different from the pain resistance Sage gifts, and was not cancelled out by Mana’s ability.

Her close subordinate is Yoichi, who has accompanied her through many events.

She has rivalry and tension with Aoi Hayanose, another powerful Sage.

She tests and endangers Yogiri Takatou and his friends, especially targeting Yogiri after failing to understand his abilities.

Summoning the Class

Kenja Sion summons a bus full of Japanese students into her world.

She quickly kills the teacher and bus driver for being distractions.

She explains the harsh conditions of the world and introduces the War Song system, pushing students to become new Sages or be used as magical livestock.

Tests and Cruelty

Sion gives the students little guidance and forces them to undergo cruel trials.

She targets weak points and pushes candidates to their limits.

She acts whimsically with both kindness and sudden violence, killing or sparing depending on her mood.

Danger From Yogiri

Sion cannot identify Yogiri Takatou’s true nature.

She repeatedly tries to eliminate him, sending researchers and Aoi Hayanose to gather information.

All attempts fail, as her helpers fall to strange deaths or are paralyzed by fear of Yogiri’s power.

Direct Confrontation

Thinking little of the danger, Sion finally faces Yogiri herself.

Her usual regeneration and pain resistance are useless: after Yogiri attacks her, her body parts stop working and cannot be fixed.

Distance does not break the effect, and even her subordinate Yoichi suffers.

In shock, Sion realizes she gravely miscalculated.

Final Defeat and Sacrifice

Broken and defeated, Sion gives up and tells Yogiri the truth.

She hands him the Philosopher’s Stone he needs to return home.

Weakened and vulnerable, she is then attacked by Mana, a newly released demon god and sister to a previous foe.

Knowing Mana will not stand a chance, Sion tricks her into attacking Yogiri, making them both victims of his overwhelming power.

Sion fades away, thinking of Yoichi in her last moments, marking her story’s tragic end.

Legacy

Even after her death, the War Song system and Sion’s influence leave a mark on the world.

Details about her abilities and methods continue to affect the surviving heroes and the rules of the new world.

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(Last edited time: May 18, 2026, 6:05 p.m.)

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