Name: Mina The Hero Brown bob cut. She wears a black-based outfit with gold accents and a skirt. She wields a Holy Sword. Said to be the strongest Hero in history, she is top-class in speed, power, and stamina. Possessing the Hero's Blessing, she is the only one who can take Diabel's disintegration attacks head-on without being destroyed.

Name: Fine The Hero Party's Healer Green hair in a half-up style. Wears black clothes with a white jacket, a green skirt, and black tights. She can heal by borrowing life energy from the surrounding nature. She can mend almost any wound, but she is poor at close-quarters combat.

Name: Flora The Hero Party's Mage Blue hair in a bun. Wears white clothes with a blue jacket. She carries a wizard's staff. Renowned as a master mage, she can use basically any spell. Her specialty is ice magic, and her ultimate move, "Absolute Zero Freeze," encases the opponent in ice. She has a quiet, "downer" personality and speaks with a lethargic tone.

Name: Noel The Hero Party's Sniper Long black hair and glasses. Wears black clothes and a black skirt. She carries a sniper rifle. Her maximum effective range is one kilometer. Despite being a sniper, she can hold her own in close combat using martial arts. She is a calm, older-sister type in both personality and speech. She often ends her sentences with feminine particles like "wane" or "wa."

Name: Diabel The Demon King Long red hair with reddish-black horns. Wears black and red clothing. She leads the demons as their King. Her ability is "Disintegration," a magic that physically destroys matter by imbuing it with mana and striking the target. She sacrifices some speed for raw power, but it is still unavoidable for ordinary humans. It does not work on Mina, who has the Hero's Blessing. She is also top-class in martial arts.

Name: Meltia An Angel The target of the quest "Radiance of Calamity in Eternal Darkness." Blonde hair in a ponytail. A ring reminiscent of an angel's halo floats above her head. Her overwhelming beauty and maternal aura transcend this world. The aura she emits purifies and incinerates demons. She can fire lasers that melt through opponents and objects. She is not an ally to Guest or Luna, but she is not hostile toward them from the start.

Name: Luna Half-Human, Half-Yokai The target of the quest "Ephemeral Flower Blooming in Reminiscence." Blue-green hair in a braid draped over her shoulder. She wears a Japanese-style outfit with a white top and blue-green bottom, always carrying a katana at her waist. Crystals float around her at all times. These crystals contain disasters that occurred in the past. If a crystal is broken, that disaster occurs on the spot. If the disaster involved a specific person, breaking it may summon a clone of that individual. She is not an ally to Guest or Meltia, but she is not hostile toward them from the start.