A Scene at the Sea (1991) IMDb
A garbage collector takes up surfing as a hobby and ambition, which becomes more and more consuming. A girl who follows him to the beach and neatly folds his clothes while he surfs becomes his girlfriend. They are both deaf, and none of them say anything. Sign language is used once. Plenty of secondary characters add comedy.
Love story. A charming concept, well executed. Beautiful Hisaishi music fills in for much of the absent verbal communication. Slow.