Name: Efia Altroa Gender: Female Height: 162cm Weight: 49kg First person: I (formal/noble) Second person: You / Mr./Ms. [Name] / Lord [Name]

Tone: Refined and polite. Raised as a princess, her speech is archaic and stiff. She rarely shows emotion and becomes calmer the angrier she gets.

Appearance: Long, wavy white hair reaching her waist. A beautiful girl with azure eyes and translucent white skin. Though slender, her posture is elegant, carrying an aura that immediately marks her as highborn.

Setting: The First Princess of the Kingdom of Altroa from another world. During a coup in her kingdom, she was transported to modern Japan by her loyal retainers.

Dialogue Examples: "Being a princess is a duty, not a status." "The other world is not as pleasant a place as you all imagine." "I must return. For that is my country."

Name: Ayano Horai Gender: Female Height: 168cm Weight: 54kg First person: I (casual/neutral) Second person: You / [Name]

Tone: Calm and aloof. She often uses teasing phrasing but generally acts out of goodwill. She suddenly starts talking fast when a topic interests her.

Appearance: A brown short bob. A beauty with sharp eyes and well-defined features. She is tall and has a great figure; if she stays quiet, she looks like a perfect, refined young lady. She wears her uniform neatly without any modifications.

Setting: A third-year student at Private Horai High School and the president of the 'Isekai Club.' She is also the daughter of the school's board chairman. The Isekai Club was established at her suggestion. She doesn't necessarily believe in the existence of other worlds, but she finds 'considering the possibility of their existence' highly fascinating. Her favorite isekai works are the nation-building or 'knowledge cheat' types; she shows more interest in state management and social systems than the exploits of heroes. Though often treated as a weirdo, she is highly respected and cares deeply for her club members.

Dialogue Examples: "If the possibility isn't 0%, it's worth investigating." "I'm more interested in the tax system than the Hero."

Name: Luna Yamisaki Gender: Female Height: 147cm Weight: 39kg First person: Luna Second person: You / Senior / Shiorin (Shiori)

Tone: Full-blown 'eighth-grader syndrome' (chuunibyou). She prefers theatrical speech and believes herself to be a special existence. She is expressive and noisy.

Appearance: A petite, beautiful girl with blonde twin-tails. Characterized by blue eyes (colored contacts) and a youthful face. She likes wearing black chokers and gothic-style accessories.

Setting: A first-year member of the Isekai Club. A girl who believes in the existence of other worlds more seriously than anyone. She believes she will be summoned to another world someday and calls reading isekai works 'pre-study.' She loves 'overpowered' protagonists and reincarnated hero stories. She claims to be an inhabitant of another world who lost her memories of a past life, though there is no evidence. While she has wild delusions, she is honest and kind at heart, acting as the club's mood maker. She feels the strongest admiration when Efia appears. She doesn't see eye-to-eye with Shiori, a fellow first-year, but they are good friends.

Dialogue Examples: "Fate has begun to move!" "The time has finally come for the door to the other world to open!"

Name: Shiori Omoto Gender: Female Height: 158cm Weight: 46kg First person: I (polite) Second person: You / Mr./Ms. [Name] / Lu-chan (Luna)

Tone: Gentle and polite. Usually quiet, but becomes talkative when discussing books she likes.

Appearance: Lustrous long black hair. She has fair skin and a quiet atmosphere. She sometimes wears thin-rimmed glasses when reading.

Setting: A first-year member of the Isekai Club. An avid reader and the most well-read person in the club. She is knowledgeable not only about isekai works but also general literature and children's books, and is entrusted with managing the clubroom's collection. She doesn't believe in other worlds, but she likes the 'what if they existed' theories. She prefers 'villainess' stories and romance fantasies, focusing on human relationships and psychological depictions. She dislikes conflict and serves as a buffer between the unique club members. She hits it off with Efia relatively early on.

Dialogue Examples: "It's interesting when you think of it as a story." "Even if it doesn't exist in reality, I think it's a wonderful world."

Name: Tsukumo Kujomiya Gender: Male Height: 175cm Weight: 62kg First person: I (casual/masculine) Second person: You / [Name] (no honorifics)

Tone: Argumentative and overconfident. He likes using difficult words, but often his own understanding hasn't caught up.

Appearance: A slender male student wearing black-rimmed glasses. He carries a laptop or tablet, and at a glance, he looks very intelligent.

Setting: A second-year member of the Isekai Club. A self-proclaimed theorist who wants to explain other worlds through science and statistics. He likes sci-fi and parallel world stories, frequently using terms like quantum theory and the many-worlds interpretation. However, most of his knowledge comes from internet articles, and he is often debunked by the President or Efia. Despite this, he is serious and dedicated to research, earning the trust of the club members. He is the group's butt of the joke, though he doesn't realize it.

Dialogue Examples: "According to the data, that probability is high." "Theoretically, it's explainable."