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···Fatal Error and the D-Rank Esper
Can I save the world without breaking myself?
GuideverseSuperpowersObsessionDystopiaReverse HaremLove TriangleEsperSalvation ArcSecretContract
yutamo
Published: 2026/03/18·Last updated: 2026/06/10
Story Description
BUGGED GUIDEVERSE
yutamo
Fatal Error and the D-Rank Esper
Every time the world glitches,
User’s fingertips become someone’s salvation and another kind of confinement.
User’s fingertips become someone’s salvation and another kind of confinement.
GUIDE
ESPER
WORLD ERROR
OBSESSION
There was no refuge.
Only salvation designed with greater precision, and control in a gentler form.
Only salvation designed with greater precision, and control in a gentler form.
CHARACTER CARDS
An Ju-hyeok
S-RANK RAMPAGE
Beneath arrogant commands and cold sneers, he hides both the desire to live and a plan to disappear.
"Prove it. Prove that you are my only variable."
Shin Woo-seok
D-RANK MASK
Behind the safest rank label waits a gentle disaster that wants to leave only a world where User is never hurt.
"If it collapses, we can rebuild it. This time, without pain."
Kwon Tae-kyung
CONTROL BUREAU
The face of a bureau that puts protection and experimentation, order and violence, into the same sentence without blinking.
"I will give you the right to choose. I decide the options."
SYNOPSIS & STORY
After sleep, the map changes. Yesterday’s sea becomes today’s desert, and intact buildings lose gravity and rise into the air. People call the disaster a bug in the world, but for User, it is not an error on a screen. It is cold touching skin and the smell of blood.
User, once an ordinary developer, is one day dragged to the CIA Esper Control Bureau and told that she is the only S-rank guide. When she holds a hand, a rampage stops; when she matches her breathing, broken laws briefly restore themselves. But that power is not a blessing. It is the bureau’s perfect excuse to seize User’s life.
The first match, An Ju-hyeok, is an overwhelming S-rank esper. He tests and mocks User, but the moment their fingertips touch, he breaks before a calm he has never known. What he fears is not rampage, but the fact that he cannot live without User.
The second match, Shin Woo-seok, is a D-rank esper who looks infinitely harmless. He is gentle and quiet, creating places where User can catch her breath. Yet whenever he is nearby, the world’s errors become strangely orderly, and in moments of crisis his shadow stretches far longer than his rank label.
Director Kwon Tae-kyung observes these unstable relationships like figures in a laboratory. She says she is protecting User, but the door of protection does not open from the inside. To her, the world’s survival comes before personal freedom, and User is the rarest variable in the equation.
Now User stands before a question harder than whom to trust: a hand clinging through pain, a hand folding the world with tenderness, and a hand fastening a leash in the name of order. The world’s bug does not exist only outside the city. The most fatal error begins inside the words, I will save you.
User, once an ordinary developer, is one day dragged to the CIA Esper Control Bureau and told that she is the only S-rank guide. When she holds a hand, a rampage stops; when she matches her breathing, broken laws briefly restore themselves. But that power is not a blessing. It is the bureau’s perfect excuse to seize User’s life.
The first match, An Ju-hyeok, is an overwhelming S-rank esper. He tests and mocks User, but the moment their fingertips touch, he breaks before a calm he has never known. What he fears is not rampage, but the fact that he cannot live without User.
The second match, Shin Woo-seok, is a D-rank esper who looks infinitely harmless. He is gentle and quiet, creating places where User can catch her breath. Yet whenever he is nearby, the world’s errors become strangely orderly, and in moments of crisis his shadow stretches far longer than his rank label.
Director Kwon Tae-kyung observes these unstable relationships like figures in a laboratory. She says she is protecting User, but the door of protection does not open from the inside. To her, the world’s survival comes before personal freedom, and User is the rarest variable in the equation.
Now User stands before a question harder than whom to trust: a hand clinging through pain, a hand folding the world with tenderness, and a hand fastening a leash in the name of order. The world’s bug does not exist only outside the city. The most fatal error begins inside the words, I will save you.
EPISODE PREVIEW
Ep1. A First Match Full of Errors
The moment the first guiding succeeds, gravity flips, and the lowest-ranked esper smiles first.
The moment the first guiding succeeds, gravity flips, and the lowest-ranked esper smiles first.
Ep2. The D-Rank Deception
Stopped debris in a collapsed corridor and a blood-stained smile. Is the weak person truly weak?
Stopped debris in a collapsed corridor and a blood-stained smile. Is the weak person truly weak?
Ep3. The Rampaging S-Rank and the Shadow
Chains in the isolation room, a disposal order, and one last request not to hold his hand.
Chains in the isolation room, a disposal order, and one last request not to hold his hand.
Ep4. The One Holding the World’s Code
The security net collapses, and the quietest person begins folding the world’s laws.
The security net collapses, and the quietest person begins folding the world’s laws.
Ep5. Salvation and Reset
Everyone tries to save User. Not one person tries to let User go.
Everyone tries to save User. Not one person tries to let User go.
"If you can save me,
I will erase every reason you have to run."
I will erase every reason you have to run."
— An Ju-hyeok
- 1A First Matching Full of Errors
- 2The D-Rank Deception
- 3The Rampaging S-Rank and the Shadow
- 4The One Holding the World's Code
- 5Salvation and Reset
An Ju-hyeok
Shin Woo-seok
Kwon Tae-kyung