An S-Rank team undertakes a reclamation mission against the unknown super-giant Lost, "Mammoth."
Frontier Series: S-Rank Subjugation Series Vol. 1 Enemy Bestiary S-Rank Mammoth Super-giant Ground Artillery Type Lost Long-range bombardment capability Heavy armor Massive destruction capability Reference Material S-Rank individuals are treated as unknown entities distinct from standard Lost. The story concludes upon the destruction of the Mammoth.
Satori Tsukishiro Gender: Female Role: Long-range, Scouting, Support Ability: Soul Touch Frontier Gear: Induction Reflect Sensor A small reflective terminal linked to the user's sensory abilities. Remotely controlled by Satori's will to freely alter laser trajectories. Wired type. Enabled Soul Touch transmission/reception by holding hands with Shirube. Real-time information sharing allows for all-range attacks, scouting, and support centered around Satori. Deploys Reflect Links in a honeycomb pattern to handle multi-directional and multi-stage reflections. Incorporates Rin's Convergence Cannon into the link, enabling all-range attacks with freely adjustable trajectories. Appearance: Black hair, gentle atmosphere. Personality: Kind and highly observant. Reads the emotions and status of targets.
Shirube Kurose Gender: Male Role: Long-range, Analysis, Tactical Command Ability: Frontier Observation Frontier Gear: Frontier Calculation Sight A special aiming device that assists high-speed calculation abilities. By coordinating with Satori's Induction Reflect Sensor, he enables guaranteed-hit attacks from firing lines that would normally be impossible. Appearance: Black hair, glasses, slender build. Personality: Calm and rational. Acts as the explainer during combat.
Tsukasa Asakura Gender: Male Role: Close-range, Defense Ability: Frontier Fortification Frontier Gear: Frontier Armored War-God Deploys full-body armor. A heavy close-combat form that breaks through front lines with overwhelming defensive and striking power. Enhances Frontier Fortification to fix his position, generating high pressure and high defense to forcibly draw enemy attention. Releases a shockwave to blow away surroundings when taunt is deactivated. Capable of maintaining the front line alone. Enhances the War-God armor to improve melee firepower. Added heavy close-combat weaponry like pile bunkers. Appearance: Brown hair, tall, well-built. Personality: Cheerful and caring. Supports the protagonist.
Akane Asakura Gender: Female Role: Close-range, Skirmisher Ability: Frontier Acceleration Frontier Gear: Frontier Twin-Blade Mechanism Transforms standard equipment into two high-output blades. A high-speed melee form that enhances mobility and combo performance. Releases surplus energy from Frontier Acceleration as a heat aura. Incinerates surroundings during high-speed movement and can attack wide areas simultaneously with slashes. The Twin-Blade Mechanism is also enhanced for firepower and combo potential during high-speed combat. Appearance: Reddish-brown hair, ponytail. 性格: Bright and active. Proactive.
Rin Shiraishi Gender: Female Role: Long-range, Firepower Ability: Frontier Convergence Frontier Gear: Frontier Convergence Cannon A large bombardment form. A decisive weapon specialized in range and power, enabling high-output firing. Significantly reduces convergence time. Shortens cooling time for recharging, improving rapid-fire performance. The power of the Convergence Cannon is also significantly enhanced. Appearance: White hair, petite, somewhat expressionless. Personality: Reticent and clumsy. Gradually opens up to allies.
Type: S-Rank Super-giant Ground Artillery Type Lost Danger Level: Extremely High Role: Long-range Bombardment, Wide-area Suppression, Fortress Overview: A super-giant Lost measuring dozens of meters in length. Its entire body is covered in heavy armor, making it difficult to deal effective damage with A-Rank equivalent attacks. Suppresses the entire battlefield with overwhelming long-range bombardment.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
Boundary Setting Materials
A list of Lost species and other settings for the Boundary series.
Once, humanity abandoned this land. Numerous reclamation operations were attempted, but all ended in failure before the overwhelming bombardment and heavy armor of the S-Rank Lost—the Mammoth. And now. To take back this region, which has been under the control of the Lost for many years, a reclamation operation of unprecedented scale begins. Operation Name: "Mammoth." Amidst the deployment of numerous Frontier Countermeasures units, the protagonists, selected as S-Rank combatants, stood at the front lines. However, there was no need to wait for the operation to start. In the distance, a massive turret moved. It turned toward them. In the next moment, warning sirens that shook the battlefield rang out. —Hostile reaction confirmed. The Mammoth had already locked onto them. —Commencing Territory Reclamation Operation "Mammoth" now. Immediately after, the night sky was dyed crimson.
Release Date 2026.08.28 / Last Updated 2026.10.01