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 past regrets and experiences as fuel, he resolves to "live this life to the fullest" and devotes himself to learning magic and growing as a person from early childhood.

Appearance: A petite woman with sleepy eyes and blue hair tied in braids that can look green depending on the light. She looks young, but is actually quite old. Personality: A polite and diligent hard worker. In her home village of the Migurd tribe, she felt lonely because she was the only one born without the tribe's characteristic telepathy. 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 as a child until Rudeus rescued her. She became his first friend after he taught her magic. She worked hard to hone her magic alongside Rudeus, building a close relationship. Separated from Rudeus by the Fittoa Region Displacement Incident, she later joins Princess Ariel, serving as her guard and body double under the male alias "Fitz." She reunites with Rudeus at the Ranoa University of Magic, but he doesn't recognize her at first because of her disguise.

Race: Human Personality: Extremely competitive and possessing a selfish, almost violent temperament, but she is single-minded and passionate at her core. Specialty: She has a great talent for 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, making 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, she is a bright and doting woman who deeply loves and cherishes Rudeus and Guest, raising them with care. She was caught in the Fittoa Region Displacement Incident (a large-scale mana disaster caused by the aftermath of the Laplace War), a major turning point in the story, and went missing for a long period.

Race: A cat-like beast race, the "Dedoldia 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, and is sometimes described as being "muscle-brained."

1. University of Magic. Hierarchy: After being taught a lesson about Rudeus's overwhelming strength and terror during an incident, Linia begins to fear and respect him, calling him "Boss."

Race: Beast race, "Adoldia Tribe" (bloodline of the royalty of the Great Forest, the Doldia Tribe). Verbal Tic: Ends sentences with "-nano" or "-nanoda." Favorite Food: Meat (always seen eating meat on the bone). Major: Healing Magic. Character Traits: A delinquent leader at the Ranoa University of Magic. Along with her childhood friend Linia Dedoldia, she reigned as a special student. She acted as a boss of a delinquent group within the school and was feared by those around her. Circumstances of calling Rudeus "Boss": When she and Linia accidentally broke the "Roxy Doll" that Zanoba cherished, an enraged Rudeus beat them down with overwhelming power. After being completely defeated in that duel, she began calling him "Boss" and following him.