Glass no Mori

Taking a request from a relative the protagonist moves to an out of the way village in the middle of a forest to take care of an old vacation house.
She spends a short summer vacation in this quiet, forgettable village.
But one day while going deep into the forest on a whim and finding a lake, plains, and a cafe she meets three mysterious guys who seem to be manifestations of the forest, and maybe she falls in love.