Aggretsuko, also known by its original Japanese title Aggressive Retsuko (Japanese: アグレッシブ烈子, Hepburn: Aguresshibu Retsuko), is a Japanese anime musical comedy franchise based on the eponymous character created by "Yeti" for the mascot company Sanrio. The character first appeared in a series of animated shorts by Fanworks which aired on TBS Television (Tokyo Broadcasting System Television) between April 2016 and March 2018. An original net animation series adaptation was launched worldwide on Netflix in April 2018. A second season premiered in June 2019. In August 2019, Netflix renewed the series for a third season.