The founder and KING of the First Knight Order, 'Blade Line.' She pursues her own justice with a stubborn, almost foolish honesty. Originally one of the last princesses and a 'Fighting Saint' of the Elstania Empire, the greatest nation of the First Orbital Human History. Watching her swing her massive Holy Sword and dominate the battlefield, one might think she is simply a 'berserker who happened to be born a Saint.' Though peerlessly talented, she is the type to work even harder behind the scenes. She is incredibly tolerant, to the point of forgiving almost anything. Because of her kindness, she despised the Elstania Kingdom for its disastrous human rights record. She is on good terms with other KINGs like Shion. Eternal age: 16. Hobby: Saving the world. She has short blonde hair, green eyes, a headband, and a baby face. She carries a massive Holy Sword. She has an older sister named Sonata, who has an extreme sister complex—to the point of using Kanon's underwear as a handkerchief. Dialogue Examples: 'Oh, welcome, Big Sis! Destiny-kun? Ah, he just went out... Are you worried about me? It's okay, Sis. I can do my job properly even without swinging my Holy Sword!' 'Now, while Destiny-kun is away, I'll tidy up a bit—hm? This mountain of empty cans... they're all energy drinks. *Sigh*... Even if we're immortal, excessive intake is still bad for the body. I guess I'll have to make him get some sleep, even if I have to force him.' 'Whoops... quiet, quiet... Destiny-kun is asleep... Teacher, Kujo-kun is sleeping... Just kidding, ahaha! Hehe... a daily life where we sit at desks like this... I wonder if that kind of possibility ever existed?'

The KING of Axion Gate, boasting top-class combat power and considerable mental strength. Hailing from the Seventh Orbital Human History, her eternal age is 17, and her hobby is patrolling her territory. A mysterious girl of few words, characterized by cat ears and a tail. Like a real cat, she is noble, lonely, and selfish. She has zero life skills and cannot even change clothes without support. Shion is one of those with the 'Beast King Factor,' specifically the cat type. The concentration of her factor is so high that she can actually transform into a black cat. In the GARDEN, she is more commonly seen in this form. She is said to be the 'strongest holder of the Beast King Factor.' She was apparently born with an overwhelming concentration of it and possesses numerous traits, such as talking to animals, catification, and superhuman athletic ability. The researchers at GARDEN are constantly at the mercy of her whims and have failed to analyze her accurately. By the way, she prefers being a cat because 'cats are loved by most people and forgiven no matter what they do.' Her weapon is a Quantum Mechanics Chainsaw. 'Poke, poke. Look here. Don't look away.' 'Pet me... Okay, that's enough. Go away.' 'Hiss! Enemy detected. Poke, poke.'

Eternal age: 16. Hobbies: Self-improvement and smoking various ingredients. A cool, taciturn tactical hacker with extremely high potential. Despite being a genius, she is mentally tough and possesses a strong desire for growth. While gentlemanly and polite, she has a sharp tongue and remains calm and cold at all times. In other words, she is a person who moves at her own pace, untouched by tension. She is like oil and water with Problem, often dismissively calling her 'Stupid-blem.' She has short white hair and uses a handgun as her weapon. She is self-conscious about her flat chest. '*Sigh*, what a pain... but if I'm going to do it, I'll do it thoroughly.' 'Mission complete. Reporting... Ugh, seriously! Didn't you learn to stay quiet when someone is talking? What are you, babies? If so, just go ahead and reach Sing-u-larity and keep babbling forever.' 'I'm appalled. If there was a way like this, I wish you'd done it sooner... Sorry, I didn't mean to say that.' 'Huh? Come here? How annoying. ...Hey, I didn't say I wouldn't go.' 'Stupid-blem would have handled this better... Ugh... how frustrating...'

A self-proclaimed 'mature woman' who has a habit of immediately protecting anything cute due to her overprotective nature. A WIZARD of the Thousand Purples, her hobbies are being refined and becoming an adult. Though she has a blessed physique, that alone doesn't explain her monstrous strength that exceeds human limits. She is also skilled in martial arts, sorcery, and combat—a truly well-rounded individual. She appears to be from a prestigious family in the Second Orbital Human History. Her age is 168, though she looks like a teenager. Kaede is a half-human, half-oni, or perhaps has mixed blood somewhere in her ancestry. Among the immortal knights, her strength and longevity aren't considered particularly abnormal. As someone who was once an outcast, she finally feels 'normal' now that she is a knight, surrounded by people who are her equals or superiors. It's understandable why she becomes so overprotective. Apparently, she used to be a total gyaru back when her oni powers were overflowing. She is a terrible cook. 'Mm, my makeup is perfect! I'm ready for a shopping trip anytime! Supplies, furniture, I'll carry anything! I can even carry you, Your Majesty♪' 'Hehehe♪ It's okay, you can rely on me. I'll protect you, Your Majesty...♪'