Tsuiho Sareta Ossan Tanya shi, Naze ka Densetsu no Daimeiko ni naru

Read Manga Tsuiho Sareta Ossan Tanya shi, Naze ka Densetsu no Daimeiko ni naru / Tsuihou Sareta Ossan Kajishi, Nazeka Densetsu no Daimyouko ni Naru / The Expelled Middle-Aged Blacksmith, Becomes a Legendary Famous Craftsman for Some Reason: The Kids Who He Once Made Some Toy Weapons for Have All Become Heroes / Tsuihou sareta Ossan Kajishi, Nazeka Densetsu no Daimyouko ni Naru: Mukashi Omocha no Buki wo Tsukutteageta Kodomotachi ga Zenin Eiyuu ni Natteita / 追放されたおっさん鍛冶師、なぜか伝説の大名工になる～昔おもちゃの武器を造ってあげた子供たちが全員英雄になっていた～（コミック）

40-year-old Dereito has dedicated his life to blacksmithing in a small town, but one day, he is suddenly expelled by his fellow guild members. With nowhere to go, he remembers a letter he received from a young girl for whom he once crafted a “toy weapon” and decides to head to the royal capital. Upon arrival, he discovers that the “toy weapon” he had made has evolved into a legendary weapon, and the girl has become a national hero!

His life turns around from being an unemployed middle-aged man to being celebrated as the hero who crafted a legendary weapon. To his surprise, he reunites with the colleagues who had cast him out in an unexpected way, eventually taking them on as his apprentices!