- H@appy Fever Forever!! is one of the unlocks of the pop'n time trip -prologue- (ポップンタイムトリップ プロローグ?) event. It could be unlocked from November 22nd, 2018 to February 19th, 2020 by filling out the pop'n music 14 FEVER! card.
- Despite that pop'n music 6's OTOKO-MAN is used in H@appy Fever Forever!!, OTOKO-MAN received a new portrait and can be selected as a new character in the pop'n music peace character category.
- The extra "a" in H@appy Fever Forever!!'s title might be a mistake, as good-cool noted that the song is named H@ppy Fever Forever!! .
Song Production Information
Difficulty & Notecounts
pop'n music difficulty rated from 1 to 50 from Sunny Park onwards.
|Notecounts / Long pop-kun||175 / 3||505 / 7||864 / 8||1343 / 8||333||-|
|pop'n music peace→Present||9||25||39||46||19||-|