Boku To Furusato Restaurant

From Wildflower Scans:
Tomaru Harukaze is extremely shy and terrible with any kind of social interaction. His worried mother sends him to live with his grandparents in the countryside—born and raised in Tokyo, Harukaze worries he’ll have trouble adjusting, but that’s not the worst part: he will be starting a part-time job at Restaurant Bell, where his grandmother is a regular customer! Not only will he have to learn to interact with customers, but he’ll also have to learn to get along with his quirky coworkers.