Tsuihou sareta Moto Zatsuyougakari, Kikakugai no Gijutsu de "Saikou no Shuuzenshi" to Yobareru You ni Narimashita: SSS-Rank Party ya Ouzoku kara no Irai ga Tomarimasen

Lyle, a "repairman" who had no combat skills, spent his unfortunate days as the dead weight in the party. He had been supporting the party in the shadows in order to fulfill his dream of owning his own store someday, but he was told that the party did not need someone who could not fight and that he would be banished! One day, Lyle is at a loss for what to do when a mysterious swordsman named Lindo appears before him with an old sword, asking him to "repair the sword. Lyle decides to accept this sudden request, and repairs a large sword with a vanished family crest engraved on it, and delivers it to Lindo... but the sword he repaired shows unexpected power! Lyle is gradually becoming well known in King's Landing, and he receives requests from SSS-ranked parties and noble royalty! (Source: Starts Shuppan, translated)