Halation Summer / Summer Night Town (English Version) (ハレーションサマー / サマーナイトタウン (English Version)) is Coconuts Musume's debut single. It was released on July 23, 1999, and is their highest selling single. It reached #40 on the weekly Oricon charts and charted for two weeks.
"Halation Summer" was used as the first opening of the anime Kyorochan.