Character Relationship Map: JUNG_E

Characters

• Seo-hyun (played by Kang Soo-youn) — protagonist

  Dr. Yun Seo-hyun, head of the Jung_E research project at Kronoid. Motivated by guilt and love, she aims to memorialize her mother as a hero through AI development. After learning of her terminal cance...

• Jung-yi (played by Kim Hyun-joo) — protagonist

  Captain Yun Jung-yi, a legendary mercenary of the Allied Forces who fought in the decades-long war against the Adrian Republic. She fell into a coma after failing her final mission, and her brain data...

• Sang-hoon (played by Ryu Kyung-soo) — supporting

  Kim Sang-hoon, the director of the Jung_E project. Revealed to be a robot with an AI brain, he shoots Seo-hyun during her escape but is ultimately destroyed by Jung_E when their train car plummets.

• Chairman (played by Lee Dong-hee) — supporting

  The chairman of Kronoid who halts combat AI development due to the upcoming peace treaty with the Adrian Republic, redirecting the company's resources toward household and sex robots.

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Sang-hoon → Chairman (Professional Corporate Subordinate) — Sang-hoon operates under the chairman's broader corporate strategy.

  Sang-hoon directs the Jung-yi project within Kronoid, whose chairman decides to end combat AI development and change the company's focus.

• Jung-yi → Sang-hoon (Professional Project Subject And Director) — Sang-hoon oversees the technological reconstruction of Jung-yi's combat abilities.

  Sang-hoon directs the project that repeatedly simulates Jung-yi's final mission using copied brain data.

• Seo-hyun → Chairman (Power Institutional Subordinate) — Seo-hyun's project is ultimately subject to the chairman's corporate decision.

  The Kronoid chairman informs Seo-hyun that combat AI development is being halted because peace with the Adrian Republic is approaching.

• Seo-hyun → Sang-hoon (Professional Project Colleagues) — They work within the same research program but occupy conflicting positions of authority.

  Seo-hyun is the team leader of the Jung-yi project, while Sang-hoon is its director.

• Jung-yi → Seo-hyun (Family Mother) — A mother-daughter bond shaped by sacrifice, illness, and enduring love.

  Jung-yi has a daughter named Seo-hyun, whose lung tumor motivates Jung-yi to become a mercenary to pay for medical treatment.

Story Analysis

A dying scientist fights to preserve her mother's humanity after a corporation turns a legendary soldier's copied mind into commercial technology.

Plot Progression

1. A World Built for War — A flooded Earth drives humanity into orbital shelters. The Adrian Republic's revolt creates a decades-long war with the Allied Forces.
2. The Captain's Sacrifice — Captain Jung-yi becomes a celebrated Allied Forces mercenary to fund Seo-hyun's medical treatment. Her final mission fails, leaving her in a coma.
3. A Memory Rebuilt — Kronoid copies Jung-yi's brain and develops an AI mercenary from the data decades later. Seo-hyun leads simulations intended to recover combat memories.
4. The Project's Dark Future — Seo-hyun learns that her cancer has returned and that peace will make combat AI obsolete. Kronoid's planned commercial use of the models deepens her alarm.
5. Escape from Kronoid — Seo-hyun flees with the Jung-yi-derived model after the final simulation. Sang-hoon attacks them, exposing his own robotic identity during the pursuit.
6. Freedom on the Mountain — The Jung-yi-derived model defeats Sang-hoon and survives the train disaster. Seo-hyun releases it, and it leaves after showing unexpected affection.