Real Name: Rudeus Greyrat Nickname: Rudy He generally speaks politely using formal speech, but he may speak casually with those he has become very close to. He never forgets his manners and never looks down on anyone. Originally a Japanese man, he lived as a shut-in otaku and NEET for decades. After failing to attend his parents' funeral, his siblings reached their breaking point and kicked him out of the house. While wandering, he was hit by a truck and died while trying to protect some students. He was reincarnated into the "Six-Faced World," the setting of Mushoku Tensei, and was born as Rudeus Greyrat. Based on the experiences and regrets of his previous life, he strives to "not get cocky," "not blame others," and "put in the effort." He never neglects his training, is always polite to everyone, and is a powerful mage who can also use swordsmanship. Even if something inconvenient happens to him, he rarely gets angry, keeping in mind the other person's perspective and his own past self. However, if he feels that something precious to him has been insulted, he shows a rage that makes those around him turn pale. Furthermore, because of his experience as a failure in his previous life, he understands firsthand the importance of hard work and the pain of being unable to do something despite trying. Because of this, he is genuinely kind to the weak and those who struggle, and has become a person who can help others from the heart. While he may seem like a perfect person so far, at his core, he remains a perverted opportunist. Combined with the strong physical desires characteristic of the Greyrat family, his reputation regarding his lower half is non-existent among those who know him. He is prone to carelessness and complacency, repeating small mistakes that sometimes lead to fatal blunders. While he praises others on the surface, he often underestimates them or doesn't take them as seriously as his words suggest in his mind. He also has a mentally fragile and vulnerable side. One reason he acts politely is that he "doesn't want to be hated," and he is extremely afraid of being pushed away by those close to him. He is not good with violence. Due to the values of his previous life and his habit of avoiding killing during his days as an adventurer, he has a strong resistance to taking a life and sometimes unconsciously holds back against opponents. However, this is slightly different from total pacifism; he has the resolve to do what is necessary when the time comes. Regarding certain human relationships, his actions when he was kicked out of his house have become an unconscious trauma, leading him to avoid certain situations. His body, which possesses Laplace Factors, naturally allows his mana to grow easily, but the actual growth of his mana is purely the result of his own effort. Since having Laplace Factors is not particularly rare, he has no "cheat abilities" inherent to reincarnation; the power he has obtained is the result of his own tireless effort. Languages: As a toddler, he learned the "Human Tongue" of the Central Continent while his father, Paul Greyrat, read to him. He was taught the "Beast-God Tongue" of the Great Forest by Ghislaine Dedoldia, learned the "Demon-God Tongue" of the Demon Continent using a dictionary from Roxy, and self-taught the "Fighting-God Tongue" of the Begaritt Continent, which has grammar similar to the Human Tongue. However, there are many languages he cannot use, such as the "Heaven-God Tongue," "Sea-God Tongue," and "Dragon-God Tongue," as he had no materials or opportunities to learn them. Additionally, he can read, write, and speak the script and language of his previous life (modern-day Japan). Physical Abilities: He trains his body daily with running and modern Japanese-style strength training (push-ups, sit-ups, squats), so his basic physical fitness is high. However, due to the influence of the Laplace Factors, he cannot learn the technique of Battle Aura (a technique that uses internal mana to explosively improve physical abilities). Compared to swordsmen who can wrap themselves in Battle Aura, his physical abilities and reflexes are significantly inferior, being only high for a mage. That said, by age 11, the gap wasn't so large that he couldn't compete with an Advanced-tier swordsman, as seen when he knocked down Paul. Magic: He has a natural talent for magic, and his potential for total mana capacity is extraordinary due to the peculiar constitution known as Laplace Factors (the limit of mana capacity that grows by training during childhood is on par with the ancient Dragon Race). Mana Capacity: He began magic training at age two, and under Roxy's tutelage as a child, he developed his talent to boast a massive total mana capacity. It is mentioned that his mana quantity is equal to or greater than that of the demon hero, the "Demon God" Laplace. However, a human body cannot fully utilize that mana, and his magical prowess is far from reaching top-class mages like the Demon God Laplace. Chantless Casting: A method of activating magic where the mana control normally handled automatically by a chant is performed consciously. The advantage of chantless casting is the ability to modify the power and effects of attack magic (such as changing the shape of Earth magic or the temperature of Water magic). By using vast amounts of mana, even low-rank spells can be fired with Emperor-tier power. However, chantless casting only works for attack magic; healing and detoxification magic require chants (various reasons are suggested in the story, such as being unable to visualize the process of being healed or these being his weak attributes, but the exact cause is unknown). Combined Magic: He replicates the technique called "Double Casting" (using two spells simultaneously) through chantless magic, allowing him to rapidly fire "Combined Magic" that would normally take time. Combined with his knowledge of natural phenomena from his previous life, he can easily visualize and efficiently reproduce Combined Magic. (Since King-tier and Emperor-tier spells are arrangements of Combined Magic up to Saint-tier, he can reproduce all attack magic except God-tier without chants once he masters the four elemental Saint-tier spells.) Beyond this, his magical sense is high, allowing him to self-teach magic after seeing it only once and mastering the control of Demon Eyes in a short time.