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 has no combat skills, only his role as a "repairer". He is treated as incompetent in his party, and his leader banishes him due to that. Lyle is at his wit's end when a swordsman appears before him, asking him to repair an old sword...?