Koitoi Beach

It has a long coastline that is rare for Eastern Hokkaido, and you can get a good view of the Pacific Ocean with no obstructions.
It is on the southern side of the roadside station (Shiranuka-Koitoi), and it is also known as the filming site for many movies.
The romantic name, meaning "to question love," makes it very popular for couples, and on the evening of sunny days, it is possible to view the beautiful sunset.