Story Structure — 5 Plot Phases
The Hospital Siege Begins
News reports introduce the deadly robbery and the hostage situation at Tadokoro Hospital. Shugo arrives for Kosakai's shift shortly before the masked robber seals the building.
Key Events
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Convenience Store Robbery Reported — News reports announce a robbery that has already left four people dead.
Location: Hachioji convenience store
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Hostages Taken To Hospital — The robber takes hostages to the former mental hospital, and police cannot enter.
Location: Tadokoro Hospital
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Shugo Covers The Night Shift — Shugo arrives to cover Kosakai's night shift and is introduced as Kosakai's junior. Characters: Shugo Hayami, Tsukasa Kosakai
Location: Tadokoro Hospital
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Staff Prepare For Patients — Miyata and other staff prepare to continue working with the patients. Characters: Shugo Hayami, Tsukasa Kosakai, Katsuhito Miyata
Location: Hospital wards
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Masked Robber Enters — The masked robber enters the hospital and forces the people inside to obey. Characters: Shugo Hayami, Kaori Sasaki, Katsuhito Miyata
Location: Hospital interior
A Ward Under Threat
The robber cuts communications, gathers phones, and threatens the hostages. Hitomi is shot, forcing Shugo and the staff to provide emergency care in inadequate conditions.
Key Events
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Communications Cut — The robber cuts the phone lines, collects mobile phones, and blocks the exits. Characters: Shugo Hayami, Kaori Sasaki
Location: Hospital corridors
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Hostages Receive Threats — The robber threatens to kill hostages if police attempt an assault. Characters: Shugo Hayami, Kaori Sasaki, Katsuhito Miyata
Location: Hospital ward
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Hitomi Is Shot — Hitomi is shot during the siege, creating an immediate medical emergency. Characters: Shugo Hayami, Hitomi Kawasaki
Location: Hospital ward
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Emergency Treatment Begins — Shugo treats Hitomi despite the hospital's inadequate surgical facilities. Characters: Shugo Hayami, Hitomi Kawasaki, Katsuhito Miyata
Location: Hospital treatment area
Clues Beneath The Records
Shugo tries to contact police while the staff search the hospital and destroy evidence. Strange numbered messages and an inconsistent patient count point toward a concealed institutional secret.
Key Events
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Director Hides Information — Tadokoro appears to know more about the siege and its cause than he admits. Characters: Hospital Director Tadokoro, Shugo Hayami
Location: Hospital interior
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Attack Has A Hidden Motive — The robber insists that the attack concerns a hidden hospital secret, not an ordinary robbery. Characters: Shugo Hayami, Hospital Director Tadokoro
Location: Hospital ward
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Shugo Contacts Police — Shugo communicates with police while trying to protect the patients. Characters: Shugo Hayami
Location: Hospital interior
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Staff Search The Building — The staff move carefully through the building, destroy evidence, and prepare for rescue. Characters: Kaori Sasaki, Katsuhito Miyata, Shugo Hayami
Location: Hospital corridors
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Messages Appear In Records — Strange messages containing numbers associated with patients and floors are discovered. Characters: Shugo Hayami, Kaori Sasaki
Location: Medical records area
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Patient Count Does Not Match — The admitted-patient total appears inconsistent, suggesting another person may be involved. Characters: Shugo Hayami, Kaori Sasaki, Hospital Director Tadokoro
Location: Hospital records area
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Hitomi's Identity Deepens — The clues suggest that Hitomi's identity has a deeper connection to the hospital mystery. Characters: Shugo Hayami, Hitomi Kawasaki
Location: Hospital ward
The Buried Hospital Truth
The police assault begins as the motive becomes connected to former patients and deaths at the hospital. Hitomi's identity gains deeper significance within the unfolding mystery.
Key Events
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Hitomi's Identity Deepens — The clues suggest that Hitomi's identity has a deeper connection to the hospital mystery. Characters: Shugo Hayami, Hitomi Kawasaki
Location: Hospital ward
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Police Begin The Assault — Police finally begin their assault on the hospital while the hostages remain endangered. Characters: Shugo Hayami, Kaori Sasaki, Katsuhito Miyata
Location: Tadokoro Hospital
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Hospital Past Is Exposed — The confrontation links the motive to former patient treatment and deaths connected to the hospital. Characters: Shugo Hayami, Hospital Director Tadokoro, Hitomi Kawasaki
Location: Hospital interior
Confronting Kawasaki 14
Shugo challenges the masked man about the records and hidden wrongdoing. The siege exposes the hospital's past and leaves Shugo facing the painful truth surrounding Hitomi and Kawasaki 14.
Key Events
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Shugo Challenges The Masked Man — Shugo confronts the masked man about the messages and the hospital's concealed truth. Characters: Shugo Hayami, Hospital Director Tadokoro
Location: Hospital interior
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Kawasaki 14 Revealed — The siege exposes wrongdoing, leaving Shugo facing the truth about Hitomi and Kawasaki 14. Characters: Shugo Hayami, Hitomi Kawasaki
Location: Tadokoro Hospital
On-call substitute doctor Shugo suddenly finds himself faced with a terrifying criminal in a clown mask. The assailant demands that Shugo treat injured high school student Hitomi. The perpetrator sets siege to the building and Shugo finds himself confined with 64 unknown patients.