A fork of Rural Dictionary
An anime franchise about lesbians (most likely) who think they could save their school by dancing, singing and winking multiple times on a stage.
Jokes aside, Love Live is an anime with great story and characters. Their music is really good too.
Serious definition: Nico Yazawa's catchphrase from the anime show Love Live! School Idol Project. Though this character seems mean and annoying at first glance, she uses this phrase often to cheer people up and show them that they don't need to feel sad, as they should always smile no matter the situation.
Nico nico nii~~ I'll nico nii your heart! I'm Yazawa Nico-Nico, and I'll put a smile in your heart! Remember, I'm Nico-Ni, and I love-Nico you!