Itsuka, Todoku, Ano Sora ni.

In this town, there are "clouds" covering the nightsky, that the starlight won't even pierce. Because of this, constellations would always be too far.

Born and raised in the Tatsumi noble family, Saku has failed to meet the expectations that lie on every male member of the family.
One day, he receives word from his strict grandfather "to live life the way he wishes." Estranged by his family, Saku travels to the estate of Kuumeishi, a town that has never seen the stars.

He went without hardly making sure of the details of arrangements for a wedding...

(Source: VNDB)