The ex-janitor who was expelled, became known as the "greatest repairman" with his exceptional skills - Requests from SSS rank parties and royalty don't stop coming

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