Shiraishi Arata Manga

Due to misunderstandings of the boy, he makes both enemies and allies angry!?From Manga UP! (Square Enix), he may be strong, but can't be ignored!!The supposedly weakest boy who mastered martial arts and magic, the world shakes his misunderstanding!?"Hmm...I have no talent."... is what Yuan grew up in the mountains thinking. He's a normal kind-hearted boy, but of the unusual things about him, is that his parents are a sage and a master martial artist. In other words, the world's strongest. Since Yuan was told he was the weakest, he leaves home to make his dreams of becoming a knight come true."Eh!? Is it really possible to be defeated with a mere finger-flick by an 8-year-old kid?""You heard the hero was the weakest member? You'd have to be out of your mind to fight that!""Armies of Angels? You mean the harmful birds? I'll just remove them altogether!"Now, the boy who sees dragons as just lizards you can eat regularly thinks (I am weak. I'll have to get even stronger or else I'll never become a noble knight), will he ever be free from his misconceptions!?

After reincarnating in a different world, the great sage Ephthal spent all of his life researching magic. However, he who had aimed to reach the summit of magic, knew of the limits of his talents and fell into despair, thus closing the curtain to his lifetime. However, 400 years later, he reincarnated for the second time and enrolled in a magic academy using the sorcery and knowledge he acquired from his previous life. As if to sneer at the state of magic that had been in decline for the past 400 years, he easily invokes legendary class magic! With overwhelming power, the entire world will kneel before him

Our protagonist was reincarnated in a world with goblin and dragon....but his optimal job is "villager". Using the cheat "getting one chance to redo life after death" he will show you what a villager can do.