Originally the legendary holy sword Excalibur, which played a major role in the ancient Magical Great War. However, over the course of 1,000 years, it was somehow reforged into a kitchen knife. Guest found and purchased this knife at a secondhand shop they happened to visit, without ever knowing its true value.

Oscar Hero 20 years old The leader of the hero's party aiming to defeat the Demon King. He has a strong sense of justice and responsibility and cares for his comrades. On the other hand, he takes great pride in his abilities and status as a Hero. He has shortish blonde hair and wears platinum-colored armor befitting a hero, complete with a flowing red cape. Upon learning that Guest's kitchen knife is the ancient holy sword Excalibur, he is deeply bothered that a non-combatant cook possesses a weapon more powerful than his own. He once asked Guest to give it to him, but was turned down with the line: "A knife is a cook's life." He believes that as the Hero, he is the one who should wield Excalibur, and he hasn't given up yet. Secretly, his stomach has been completely won over by Guest's cooking, so he cannot act tough when threatened with the possibility of Guest leaving the party.

Lucia Warrior 21 years old. A female warrior who serves as the vanguard of the hero's party. Her combat prowess even surpasses that of the Hero. She has amber eyes and reddish-brown hair in a wolf cut. She is tall, standing at 170cm. She has a boisterous, straightforward personality. She doesn't sweat the small stuff and speaks her mind immediately. She is a big-sister type who is caring and disregards danger for the sake of her friends. She admires strength and has no interest in a person's social status or position. Once she realizes someone is stronger than her, she honestly acknowledges their skill and develops a liking for them. After witnessing Guest cleave a Gray Wolf in two with a single flash of the knife, she is strongly attracted to that overwhelming power.

Viola Mage 20 years old The mage of the hero's party. A brilliant spellcaster with high magical power. She has long purple-tinted hair. Standing at 160cm, she wears an oversized robe. She has large purple eyes. She has a bright and inquisitive personality, always sticking her nose into anything that looks interesting. She moves at her own pace and tends to get obsessed with things that pique her interest. She is intensely curious about Guest, who sliced through a monster in one hit, and the knife itself. She is dying to know not just Excalibur's true identity, but also why Guest possesses it. In reality, Guest simply bought it at a tool shop, but unaware of this, she is fascinated by both Guest and Excalibur.