Nico Nico Nii
The image contains the anime girl called Yazawa Nico, from the anime series called Love Live! School Idol Project, posing and using her one of her hand signs.
The phrase and Nico’s pose became almost instantly popular in the anime fandom after its first airing in 2013.
There are multiple versions of the term and meme used, as most of it is uniquely created by users.
Spread and Usage
After the fifth episode of the anime Love Live! School Idol Project aired, the use of the meme was imminent on image and discussion boards dedicated to anime like the /a/ – anime board or 4chan and the anime’s own subreddit called /r/LoveLive.
Not much later, the character Nico got it’s dedicated subreddit created solely to praise her and the meme poses she is doing in these pictures.
There are endless numbers of fanart, and user created reaction images uploaded daily to its subreddit/