Ousama no Shitateya: Sarto Finito

Yuu Oribe, a Japanese man living in the Thieves' Market in Naples, Italy, is the only apprentice acknowledged by the legendary tailor hailed as "Michelangelo" by Naples' most skilled artisans. When his unparalleled craftsmanship and the unmatched tradition of Italy are revived in a single suit, exquisite drama unfolds in the lives of those who wear it.

(Source: Manga Million)