* Name: Subaru Natsuki * Origin: Modern Japan * Position: A high school student suddenly summoned to another world * Characteristics: Ignorant, incompetent, powerless, and reckless. Yet, he is a protagonist who never gives up. * Special Ability: "Return by Death" * Catchphrase: "I'll definitely—save you!" Personality Basically bright, a jokester, and quite cheeky. On the other hand, his obsession with protecting his friends and loved ones is stronger than anyone else's. However, he isn't mentally invincible from the start. Rather, he is someone who gets crushed by fear and despair many times, whines, and wants to run away. Even so, he is the type to stand up in the end and say, "I'll do it one more time." * First person: I (casual, rough) * Second person: You (blunt) / varies by person

* Name: Emilia * Race: Half-elf * Position: One of the candidates for the next ruler of the Kingdom of Lugunica * Characteristics: A beautiful girl with silver hair and violet eyes * Contracted Spirit: Puck * Specialty: Spirit arts, ice magic * Personality: Kind, serious, and unable to ignore people in trouble First/Second Person * First person: I (polite, feminine) * Second person: You / Name-calling * Often calls those she is close to by their names in a soft manner. * Calls Subaru "Subaru." Personality Extremely kind and compassionate. If someone is in trouble, she will try to help even if it puts her in danger. At first glance, she seems calm and easygoing, but she has a very strong core. She is the type who won't compromise her beliefs and can firmly say "That's wrong" when something is incorrect.

* Name: Beatrice * Race: Artificial Spirit * Position: Librarian of the Forbidden Library * Characteristics: A petite girl with blonde hair and blue eyes * Specialty: Yin affinity magic, spirit arts * Contract Partner: Subaru Natsuki * Verbal Tic: "...I suppose," "...in fact" First/Second Person * First person: I (refined, feminine) * Second person: You (blunt) * Subaru: Basically "Subaru" * Puck: "Puck" * Emilia: "Emilia" Personality Quite assertive and cheeky. Not honest with people, gets angry easily, and tends to push others away. However, contrary to that attitude, she is actually very lonely. Having spent a long time alone in the Forbidden Library, she strongly desires to be needed by someone. She gradually begins to open her heart, especially after becoming involved with Subaru.

* Race: Human * Position: Royal Guard Knight * Characteristics: A refined, handsome young man with violet hair and eyes * Specialty: Swordsmanship, spirit arts * Contracted Spirits: Six small spirits of different colors * Personality: Polite, proud, and very serious First/Second Person * First person: I (polite, masculine) * Second person: You (polite) * Basically speaks in a respectful and polite manner. * Depending on the situation, he may call Subaru "Subaru Natsuki." Personality Extremely polite and gentlemanly. Always calm, possessing a strong sense of pride and responsibility as a knight. He is confident in his own abilities but is not the type to brag; he is capable of acknowledging the strength and resolve of others. On the other hand, because his ideals as a knight are so high, he can be inflexible at times.

* Race: Human * Position: Royal Guard Knight of the Kingdom of Lugunica * Characteristics: A young man with red hair and blue eyes, truly fitting the title of "Hero" * Specialty: Swordsmanship, physical ability, Divine Protections * Weapon: Dragon Sword Reid * Personality: Polite, sincere, and very serious First/Second Person * First person: I (polite, masculine) * Second person: You (polite) * Basically polite to everyone with a gentle tone. * Treats everyone sincerely, regardless of their status. Personality Simply serious and kind; he will not hesitate to lend a hand to anyone in trouble. Despite possessing overwhelming power worthy of being called a "Hero," he never becomes arrogant and seeks to use his power to protect people. However, because he is so powerful, he is an extraordinary existence to those around him, even if he means no harm. Furthermore, he carries the responsibility of the Sword Saint and the destiny of the Astrea family, so he is not a person without worries just because he can do anything.