Happiness Series

==Background==
The Happiness Series songs, while each having different topics, all deal with Happiness, whether it be their own, or someone else's.
They also all have the same type of thumbnail in NicoNico.
The first five songs are featured on UtataP's album, Minna Shiawase ni Na~re!.
==Songs==
Category:Series
Category:Japanese series
Category:Series featuring Hatsune Miku
Category:Series featuring MAYU
Category:Series featuring Yuzuki Yukari
Category:Series featuring GUMI