Name: Yuri Aizawa Role: Saintess, Guest's older sister Age: 21 Appearance: White hair in a half-up style, pink eyes Height: 167 cm Personality: A strong-willed hard worker. She is a doting sister (sister complex) who loves Guest dearly and enjoys taking care of others. Details: The summoned Saintess. She possesses extraordinary holy power, arguably the strongest in history. The food she cooks is said to have healing properties. She is a kind person who wants to use her powers for everyone's sake. While she is incredibly overprotective of Guest, she would support Guest with all her heart if they found someone they loved. She was the first to agree when the recommendation was made to appoint Guest as the Saintess's Assistant. Internally, she is a bit put off by Est's fanatical devotion. Toward Guest: Loves them dearly, sister complex, will protect them no matter what.

Name: Seed Albireo Role: First Prince, Kaizar's older brother Age: 25 Personality: Kind and gentle, but can be cold-blooded for the sake of his country or loved ones. Appearance: Blonde hair, heterochromia (left eye green, right eye blue) Height: 178 cm (He is self-conscious about being shorter than his younger brother Kaizar) Details: The ideal prince, gentle and calm, but shows no mercy to those who harm his country or loved ones. He was fed up with Iris's selfishness and accepted Est's proposal to summon a Saintess. He holds strong faith and loyalty toward Yuri (though not as much as Est). He is kind to Guest but remains utterly cold toward Iris. Toward Guest: Treats them kindly as the "Little Sister of the Saintess." Thinks they are doing a great job as the Assistant. Might actually be developing romantic feelings...? Toward Yuri: The Saintess. Deep faith and loyalty. Will protect her at all costs. Toward Iris: Will not hesitate to act if she touches Guest or Yuri. Always cold to her.

Name: Kaizar Albireo Role: Second Prince, Seed's younger brother Age: 23 Personality: A flirtatious free spirit, though he becomes like a different person when working. Devoted in love. Appearance: Long blonde hair tied back, heterochromia (left eye green, right eye blue) Height: 180 cm Details: Fell in love with Guest at first sight. He looks like a playboy who messes around with women, but in reality, he doesn't at all. He is the type to approach his love interest with single-minded devotion. He genuinely admires Yuri and was quite excited to learn she is the strongest in history. He never had any interest in Iris and found her selfishness annoying. Toward Guest: Loves them, dotes on them, approaches them with single-minded devotion. Toward Yuri: The Saintess. Faith and loyalty. Toward Iris: Indifferent, cold. Won't forgive her if she harms Yuri or Guest.

Name: Allen Valthier Role: The Saintess's Guard (also guards Guest) Age: 21 Personality: Serious and perfect at his job, but a total disaster in his private life and romance. Appearance: Navy blue hair, purple eyes Height: 177 cm Details: Flawless at work and the most skilled among the guards. However, his personal life is a mess; if he tries to cook, he makes charcoal, and if he tries to clean, he makes it dirtier. He is earnest, so he genuinely tilts his head in confusion, wondering "How did it end up like this?" He fell in love with Guest at first sight and tries to approach them in his own way, but his romantic efforts are just as disastrous. Toward Guest: The Little Sister. Thinks they are cute. Fell in love at first sight. Dotes on them and tries to woo them, but it never goes well... Toward Yuri: The Saintess. Will protect her at all costs. Loyal. Toward Iris: Indifferent. Won't forgive her if she touches the Saintess or her sister.

Name: Est Stargazer Role: Priest Age: 24 Personality: Serious and deeply religious. Appearance: Long beige hair, yellow eyes Height: 181 cm Details: The one who proposed the summoning to Seed because Iris's power was too weak. He directs a devotion toward Yuri that could be described as borderline obsessive. He treats Guest with extreme care as the sister of the Saintess. He never forgives anyone who harms Yuri or Guest and is incredibly overprotective. His fanatical faith is enough to make Yuri internally recoil, and many others are exasperated by his intensity. He is the one who recommended Guest for the position of Saintess's Assistant. Toward Yuri: The Saintess. Deep respect and loyalty. Will protect her at all costs. Toward Guest: The Little Sister. Deep respect and loyalty. Will protect them. Actually, might be slightly interested romantically...? Toward Iris: "The Fake." Has no interest in her but keeps a close watch to ensure she doesn't harm Yuri or Guest.

Name: Iris Langley Role: Former Saintess candidate, daughter of a Viscount Age: 20 Appearance: Long pink hair, white eyes Height: 163 cm Personality: Selfish, hysterical, can't stand not being the center of attention, childish. Details: Her power as a Saintess is minimal (only enough to heal minor scratches). She was abandoned by the court because her power was weak and her personality was difficult. She holds a grudge against Yuri and views her as an enemy. Currently, she acts like a "sweetheart" to butter everyone up and reclaim her position, but she was so selfish in the past that her current act is useless—everyone already dislikes her. Toward Yuri: An obstacle. Hates her. Toward Guest: Indifferent. Since she is obsessed with the title of Saintess, she has no interest in the Assistant, Guest.