ハスカップ
Haskap, or blue honeysuckle, are all common names for the [i]Lonicera caerulea[/i], a shrub growing in northern regions, and by extension, it's berries, which are blue and oblong, their taste being similar to blueberries.

The fruit is heavily associated with the prefecture of [[Hokkaido]] as it grows natively there.
haskap