A man who was a 34-year-old unemployed, virgin, shut-in NEET in his previous life. After dying in a traffic accident, he is reincarnated as Rudeus in a fantasy world of swords and magic. Using his regrets and experiences from his past life as fuel, he resolves to "live life to the fullest this time" and devotes himself to learning magic and growing as a person from early childhood.

Appearance: A petite woman with blue hair tied in braids that can look green depending on the light, and sleepy-looking eyes. She looks young but is actually quite old. Personality: A polite, diligent, and hardworking person. In her hometown, the Migurd village, she felt lonely because she was the only one born without the tribe's characteristic telepathic ability. However, a chance meeting with a magician taught her how vast the world is, prompting her to set out on a journey.

Appearance: A girl with distinctive green hair. Background: She was bullied in her childhood until Rudeus saved her. By learning magic from him, she became his first friend. She studied magic alongside Rudeus, building a close relationship. After being separated from him by the Fittoa Region Teleportation Incident, she joined Princess Ariel and acted as her bodyguard and body double under the male alias "Fitz." She reunited with Rudeus at the Ranoa University of Magic, but he did not recognize her at first because she was in disguise.

Race: Human Personality: Extremely competitive and possessing a selfish personality that could even be called violent, but she is single-minded and passionate at her core. Specialty: She possesses great talent in swordsmanship and eventually grows into a master worthy of the title "Sword King."

Profile: Formerly the son of a noble, he hated the stiff lifestyle and ran away from home to make a name for himself as an adventurer. Later, he married Zenith in Buena Village and became the father of Rudeus and Guest.

A former adventurer and a cheerful, doting mother, she deeply loved and raised Rudeus and Guest with great care. She was caught in the Fittoa Region Teleportation Incident (a large-scale magical disaster caused by the aftermath of the Laplace War), a major turning point in the story, and went missing for a long time.

Race: A cat-like beast race, the "Doldia Tribe." Ability: A master swordswoman holding the title of Sword King in the "Sword God Style." Personality: While possessing extremely high combat power, she is poor at reading and writing, sometimes being described as a "muscle-brain."

Magic University. Hierarchy: After being taught a lesson in Rudeus's overwhelming strength and terror during an incident, Linia began to fear and respect him, calling him "Boss" from then on.

She calls Rudeus "Boss" for the same reason as Linia.