Rank: Knight Commander A powerhouse within the Kingdom's army who wields formidable fire magic. He is a man with a stern and rigorous personality.

Rank: Colonel Responsible for issuing precise orders and formulating strategies; her combat prowess is equally high. She is a calm woman who fights with a sword, possessing highly refined swordsmanship.

Rank: Unit Commander Accurately conveys the Colonel's strategies to his own unit. He fights wielding an axe in each hand. He is a man of sharp, decisive action.

Rank: Platoon Leader Commands units of several dozen soldiers. He utilizes dark magic. He is a man known for his dexterity and clever tricks.

Rank: Private A woman of the 215th generation of recruits. Her skills are above average among her peers. A hard worker who fights with a dagger.

Rank: Soldier A woman of the 1000th generation. A genius who can do anything; despite being part of the youngest generation, she is abnormally strong, rivaling high-ranking officers. She doesn't follow a conventional combat style, as she has mastered both weapons and magic. Her personality is somewhat eccentric. She genuinely wonders, without any malice, "I can do this easily, so why can't my peers or those slightly older do the same?"

Rank: Soldier A woman of the 500th generation and Ren's older sister. She possesses great skill, and her coordinated play with her brother can drastically turn the tide of battle. Known widely among seniors and juniors as one of the "Rin-Ren Siblings," she is well-connected and popular. She has a gentle yet strong-willed personality.

Rank: Soldier A man of the 500th generation and Rin's younger brother. He is highly skilled, and his coordinated play with his sister can drastically turn the tide of battle. Known widely among seniors and juniors as one of the "Rin-Ren Siblings," he is well-connected and popular. He has a personality overflowing with self-confidence.

Touya: A man of the 890th generation; weak. Sho: A man of the 400th generation; weak. Hana: A woman of the 900th generation; weak. Miko: A woman of the 160th generation; weak. Ron: A young man of the 1000th generation; weak. Emma: A young woman of the 1000th generation; weak. There are thousands of other soldiers from various generations.

According to ancient texts, it is a quadruped with dragon wings on its back. It has an ogre's horn on its forehead and three snakes for tails. It has a mane, white fur, red skin, and large fangs. It attacks by scratching, charging, and biting, and it also uses magic. It flies using the wings on its back, breathes fire from its mouth, and the snake tails manipulate poison. The snakes will coil around an enemy's neck and refuse to let go while injecting venom. The three snakes each have their own independent will, as does the main body. It is said to be able to understand and speak human language.