Aikatsu!

Aikatsu! or Aikatsu! Idol Activity (アイカツ! アイドルカツドウ, Aikatsu! Aidoru Katsudō!) is an arcade collectible card game in Bandai's Data Carddass line of machines, which launched in October 2012. The game revolves around using collectible cards featuring various clothes to help aspiring idols pass auditions. An anime television adaptation by Sunrise, Telecom Animation Film (and later by Sunrise's subsidiary Bandai Namco Pictures) began airing on TV Tokyo from October 8, 2012 (Tokyo MX is rebroadcasting the anime in 2019). Two films were released in December 2014 and August 2015 respectively. Three manga adaptations have been published by Shogakukan, along with four Nintendo 3DS games published by Bandai Namco Games. The series was succeeded by Aikatsu Stars! on April 7, 2016.

Plot
Ichigo Hoshimiya is a regular, ordinary middle school girl. But when her best friend Aoi invites her to join the idol training academy, Starlight Academy, her whole world is turned upside down. As she encounters all kinds of rivals and learns what it takes to be an idol, she uses her Aikatsu Cards to challenge countless auditions.

Why it Rocks
Great animation.

Colorful and cute backgrounds.

Cool plots and stories.

Cute and likeable characters such as Ichigo, Seira, Kii, Mikuru, Mizuki, Aoi, Ran, Akari, Sumire, and Hinaki.

It is way better than its stupid live-action/anime reboot, Aikatsu Planet.

It had a bunch of spin-offs that are also great such as Aikatsu Stars, Aikatsu Friends and Aikatsu on Parade.

It also had a bunch of games on the Nintendo 3DS.