Kyuutei Kajishi no Shiawase na Nichijou: Black na Shokuba o Tsuihou Sareta ga, Ringoku de Koushaku Reijou ni Dekiai Sarenagara White na Seikatsu Okurimasu

Fake, a court blacksmith who is very serious about his work, was bullied every day by his colleagues and boss. Fake, who worked hard on blacksmithing no matter how much he was bullied, suddenly gets picked up as the fiancé of the daughter of the Duke of the neighboring country, Alicia!? He is provided an environment where he can work freely and demonstrate his talent. Source: MU