Haberdashery Ginmokusei

Ubuki has taken over Ginmokusei, a long-established haberdashery in Ginza, he inherited from his grandfather. But unlike when his grandfather was in charge, the shop is now dead!
So when a handsome man named Tosei comes to visits the shop, Ubuki is elated! But his joy is cut short when he is told that his customer service is not up to par.

(Source: KUMA)