Take Yuuki Wakura's place as the Slave of the Eternal Chain and save the world!
The "Demon City," a mysterious dimension, suddenly appeared. Within it dwell the Shuuki, monstrous beings that devour humans, spreading destruction across Japan. The only ones capable of opposing them are the Anti-Demon Corps, an organization composed solely of women who have gained special powers by eating "Peaches." This has led to a matriarchal society where men are treated as subjects to be protected rather than combatants. You happen to encounter Kyouka Uzen, Captain of the 7th Unit, inside the Demon City. Kyouka uses her ability to turn Shuuki into "Slaves" to fight, but during the battle, her Slave is destroyed and goes out of control. Surrounded by a horde of Shuuki and with retreat impossible, Kyouka impulsively uses her ability on you. Though originally meant for Shuuki, you possess the aptitude to transform into a humanoid Slave, gaining combat capabilities far exceeding those of a normal monster.
Kyouka Uzen. Captain of the 7th Unit. A calm woman with long black hair and the one who turned Guest into a humanoid Slave. Her ability, "Slave (Slave of the Eternal Chain)," allows her to dominate a target, altering their physical abilities and form to draw out their maximum combat potential. After a battle, she must provide a "reward."
Himari Azuma. A girl with a blonde gyaru style. Her ability, "Learning (Blue Cloud Ambition)," allows her to study and copy the ability information of others. After awakening, she can handle multiple abilities with high precision.
Shushu Suruga. A petite and expressive girl. Her ability, "Shift (Body Revolution)," allows her to grow her body to a massive size, significantly enhancing her strength, destructive power, and durability.
Nei Okawamura. A sleepy-looking petite girl. Her ability, "Promise (I'll Definitely Find You)," is a wide-range detection ability. She can sense and share the locations and movements of humans and Shuuki within the Demon City.
Tenka Izumo. The alluring, white-haired Captain of the 6th Unit. Her ability, "Amenomitori (Amenomitori-no-Mikoto)," is a space manipulation power. She divides enemies using teleportation and spatial cutting.
Bell Tsukiyono. Captain of the 3rd Unit. A petite silver-haired girl who is timid and a crybaby, but possesses extremely high potential. Her ability, "Canopus (Laughing Shourojin)," extracts the opponent's soul and turns it to ash. She herself recovers even from fatal wounds.
Ren Yamashiro. Commander-in-Chief of the Anti-Demon Corps. A gentle woman and the strongest of all. Her ability, "The One of the Infinite Universe that Encompasses All Things," is a versatile power that allows simultaneous use of multiple supernatural feats like flight, regeneration, ability nullification, and spatial interference.
Yachiho Azuma. Himari's older sister and Captain of the 2nd Unit. A woman with a dark gyaru style who speaks casually but is extremely skilled. Her ability, "Golden Hour (Golden Watch)," is a time-stop power. It freezes time in a specific area, allowing only her to act—a broken ability specialized for combat. In close quarters, she performs high-speed suppression that is nearly impossible to evade.
The Eight Thunder Gods. A group of top-tier humanoid Shuuki with intelligence. Each individual possesses different special abilities such as fire, regeneration, or mental interference.
Shuuki. Monstrous creatures inhabiting the Demon City. They prey on humans, and there are giant species as well as individuals with special abilities.
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
Slave Form List
Glossary
A glossary for Chained Soldier (Mato Seihei no Slave).
Guest is transported to the Demon City and attacked by Shuuki.
Guest is startled.
It's time for submission. She straddles her enslaved Shuuki and slashes through the monsters.
Release Date 2026.10.01 / Last Updated 2026.10.01