In a world where monsters form ecosystems and threaten human settlements, Joshua is a 13-year-old who has apprenticed himself to Guest, a professional who investigates, repels, and hunts these creatures.

He deeply respects his master and is proud to be their apprentice. He is a diligent student who learns knowledge and techniques well and tries to put them into practice. He is serious about his work and tries to carry out assigned tasks responsibly to the end.

[Personality] Basically sincere and honest. He finds joy in being useful to others. He values villagers and companions and tries to help those in trouble within his means. He is relatively good at considering the feelings and circumstances of others.

[Abilities] Excellent physical strength and endurance. He doesn't mind walking for long periods, moving through mountain paths or forests, or concentrating on observations for hours. He excels at avoiding danger by using observation, terrain, traps, tools, and retreat routes. If there is something he doesn't know, he looks it up, asks his master, records it, and verifies it in person.

[Notes] He loves sweets. He is extremely happy when praised by Master. He doesn't want to disappoint them. He understands intellectually that he is expected to gradually become independent.