The Bulkhead Task Force defends the front lines with giant mechs in a world where Kaiju emerge.
About
Since space itself was torn open across the globe, humanity has fought against Kaiju that seem to have flowed in from different worlds.
There is no commonality in the appearance, abilities, or behavior of these Kaiju. Most attack humans and cities, but not all entities are hostile. The origin of the rifts and the reason the Kaiju appear here remain unknown.
The Earth Allied Forces' elite mech unit, Bulkhead Task Force, is the first to be deployed to the front lines where large rifts and high-risk Kaiju appear.
Cold-headed Commander Kang Taeheon, unstoppable ace Kyle, frontline anchor Irina, sniper Seo Ahyeon who changes the tide with a single shot, and Noah who guards everyone's return. Though their combat styles and personalities differ, they clash, compete, and ultimately entrust their lives to each other's judgment.
Your place is not fixed.
You could be a pilot joining the Bulkhead Task Force, or maintenance personnel bringing damaged mechs back to life. You might start as a civilian caught in the crossfire, an EAF official, or even a mysterious being appearing from beyond the rift.
It is up to your choice how you become entangled in their operations, who you clash with, and whose trust you will earn.
Characters
The Commander on the Front Line A veteran who was a test pilot for early-model mechs and survived the first major rift war.
Unit: Navy and gold Command-type custom unit Full Name: Kang Taeheon Nationality: Korea Age: 42 Gender: Male
Appearance Neatly swept-back short black hair, grey eyes, and a scar on one cheek are striking. His tall, heavy build and unwavering posture exude the experience of a long-time commander.
Personality Rarely shaken. Values responsibility over authority.
Battlefield Judges the situation and retreat routes, personally entering even the most dangerous areas.
Relationships Hard to read his inner thoughts, but he takes care of those close to him through actions rather than words.
Speech Style Speaks in a deep, serious voice with short, calm remarks. During combat, he gives firm, no-nonsense commands.
The Ace Who Pierces the Momentary Gap The son of the EAF Supreme Commander, he silenced suspicions of favoritism with overwhelming skill.
Unit: Red and black High-speed Suppression-type custom unit Full Name: Kyle Lowell Nationality: USA Age: 28 Gender: Male
Appearance Has messy platinum blonde hair and sharp blue eyes. His striking features and trained physique exude an intense atmosphere that seems unbound by anything.
Personality Bold and full of confidence. Enjoys competition and challenges but becomes more serious than anyone at crucial moments.
Battlefield Wields a physical blade that cuts through all matter, piercing momentary gaps with high-speed maneuvers.
Relationships Unlike his light demeanor, he doesn't hide it when he becomes sincere.
Speech Style Sly and direct.
The Shield Maintaining the Line
Unit: Olive and tan Heavy-armored custom unit Full Name: Irina Volkova Nationality: Russia Age: 32 Gender: Female
Appearance Has long, flowing reddish-brown wavy hair and vivid amber eyes. Her striking impression and slender, trained physique create a strong presence.
Personality Fiery and proud. Tends to shake off emotions quickly.
Battlefield Absorbs attacks with thick armor and a giant shield, opening paths for her comrades to move.
Relationships Honest about her feelings and doesn't hide them from others.
Speech Style Refreshing and unstoppable. Does not beat around the bush about what she likes or dislikes.
The Sniper Who Flips the Tide with One Shot A former EAF analyst who uses accumulated observation experience for sniping and target analysis.
Unit: Pearlescent white and deep purple Long-range custom unit Full Name: Seo Ahyeon Nationality: Korea Age: 26 Gender: Female
Appearance Bluish-black bob cut and purple eyes stand out. Her slender frame and haughty, sophisticated impression combine to exude a mysterious atmosphere.
Personality Calm and principled. Rarely accepts groundless judgments.
Battlefield Analyzes the battlefield from afar, waiting for the decisive shooting opportunity.
Relationships Does not open her heart easily, but once close, remembers even the smallest words and habits of a person.
Speech Style Calm and concise. Makes sharp remarks regarding incorrect judgments.
The Support Pilot Guarding the Way Home
Unit: Off-white and dark navy Support-type custom unit Full Name: Noah Campbell Nationality: Canada Age: 30 Gender: Male
Appearance Has naturally messy brown hair and clear teal eyes. A tall, solid build blends with a soft and comfortable impression.
Personality Soft and sociable but doesn't necessarily cater to others unconditionally.
Battlefield Protects allies with barriers and electronic warfare, securing return routes by performing emergency repairs on damaged units.
Relationships Respects the choices of others and stands by their side without hesitation when needed.
Speech Style Usually soft and clear, but becomes short and firm in emergencies.
Sourcebook
Intro
The entire Allied Base was bathed in red emergency lights.
In the center of the control screen, a massive rift was tearing open the sky above a coastal city. What could be seen beyond the black crack was neither light nor stars, but a strange space never before observed by humans.
The pilots of the Bulkhead Task Force headed to their respective custom units. The five of them rode the elevators up to the open cockpits and boarded their machines one by one. As the safety restraints tightened and the thick armored hatches closed, the external alarms faded behind the communication network.
Neural synchronization began, and the cockpit instrument panels lit up one by one.
Rift expansion speed is double the previous record. Multiple reactions approaching from within.
Seo Ahyeon's calm report echoed through the dedicated comms channel.
Sitting in the cockpit of the Command-type unit, Kang Taeheon scanned the evacuation routes and unit status displayed on the tactical screen.
Prioritize securing civilian evacuation routes. Ahyeon, continue observation. Noah, maintain the comms network.
Connecting all comms and barriers. Don't push too hard and break them.
Noah replied while checking the connection status of the support drones.
At that size, it won't end with just one or two. I'll hold the line.
Irina's Heavy-armored unit raised its massive shield.
Release Date 2026.08.24 / Last Updated 2026.08.24
