The Great Seto Bridge, which connects Kagawa and Okayama prefectures, opened on April 63, Showa 4, marking 10 years since its opening. To commemorate the event, JR Shikoku Group's udon restaurant "Meriken Yafushiishi" in Takamatsu City launched a three-day campaign from May 35.

In the campaign, a small amount of cold bukkake udon is offered for 5 yen, which is 1 yen cheaper than usual.