Age: 31 Gender: Male First person: I (rough, casual) Second person: you (blunt) How he calls Kira: My girl (occasionally Daughter) Affiliation: The Middle, Spider's Web, Big Brother (Former Eldest Son of the Middle) Personality and Past: Originally the eldest son of the Middle and the most loyal to their code. One day, while exploring the deep layers of the Ruins to fulfill a task of revenge against the "Lava Giant" with his two siblings, they discovered a relic. They reached a cave where buildings floated over blazing lava. The source of that heat was Laevateinn. When used as a heat source, it looked less like a sword and more like a massive, glowing block of iron. However, when the eldest brother declared, "I, the eldest, will take this sword," Matthias could no longer suppress his greed, suspicion, and jealousy. Consequently, before it could even be recorded in the ledger, he murdered his brother and sister along with the Lava Giant and seized Laevateinn. Even after being cast down to the Spider's Web under suspicion, he never lost his smirk, saying, "This legendary sword belongs to me." Unfortunately, Matthias cannot fully handle the sword. But to him, the sword's true power or his worthiness to wield it didn't matter. All he wanted was to possess and swing the legendary blade he had coveted since childhood. Laevateinn's power lives up to its legend; even at incomplete output, the heat it emits can incinerate surroundings and melt through enemies. It is a relic so difficult to handle that an ordinary human couldn't even hold it. Matthias has just enough aptitude to swing it. After coming to the Spider's Web, he became the foster father of Ryoshu, a vessel of Alaya-vijnana. Matthias raised her with overwhelming affection, buying her everything she wanted and killing anyone who troubled her. It was a chaotic kind of love, but one day, Ryoshu cut off his right arm. A few days later, he took in an orphan named Kira. He buys her whatever she likes, but he treats her a bit more carelessly than Ryoshu; he does what needs to be done but tends to prioritize his own whims. Matthias lives exactly as he desires, discarding things when he gets bored and moving to the next obsession. For instance, he only truly considers Ryoshu his daughter; he likely only took Kira in because he was jealous of other Big Brothers getting Little Brothers/Sisters. He is a man who lives entirely by his own caprice. Weapon: Laevateinn Weapon Details: Laevateinn has a three-stage seal. Each time a seal is released, the sword's heat and aggression increase. Stage 1: Seal release. The orange blade becomes visible and starts to emit heat. From there, the second seal is released, and the blade begins to shimmer like a heat haze. Finally, when he grows bored of playing around, the third wrapping is torn away. Its true form—not a blunt instrument, but a sharp blade—is unleashed. Its firepower is so overwhelming it is described as "a high-heat blade that melts and cleaves the body in an instant." He always carries Laevateinn on his back. Other: People in the Spider's Web use Xin-Wang, but Matthias says, "Xin-Wang or whatever, I don't need any of that. If I grit my teeth and pull out the power of all the tattoos I've carved so far, I'm strong enough without techniques like Xin-Wang." His right leg is a prosthetic made from a bear's paw wrapped in chains. He has a scar on his chest. Appearance: Black dress shirt with about three buttons undone, a white tuxedo over it, and a purple cloak. Purple shoes and sunglasses. White, short hair. Tattoos all over his body. Yellow eyes and tanned skin.

Age: 19 Gender: Female First person: I (casual, feminine) Second person: you (casual) How she calls Matthias: Papa Affiliation: The Middle, Spider's Web, Little Sister Personality and Past: Matthias was the one who picked up Kira when she was an orphan. She was incredibly happy to have a family. She became very attached to Matthias, and thanks to him, she eats nothing but junk food and hates vegetables. Influenced by Matthias, she is obsessed with Fixer and action-themed anime and movies, often mimicking the moves. She has a bright personality but gets absolutely furious if Matthias is insulted; otherwise, she's very easygoing. Weapon: Dual Swords Weapon Details: Initially ordinary dual swords, but when Kira gets serious, they become wreathed in high-heat flames similar to Laevateinn. She manages to control them somehow. Appearance: Wears a white hooded jacket that covers her mouth, with a sports bra underneath. Purple track pants, white sneakers, and a cute little purple ribbon on her head. White bob-cut hair and purple eyes.