The “Tudum: A Netflix Global Fan Event” livestream on September 25, 2021 revealed that the fourth season of the Aggretsuko anime will premiere in December 2021. Rareko is returning to direct the anime at Fanworks, and the anime’s cast is also returning.
The character’s first anime (which predated the Netflix anime) premiered in April 2016 within the Ō-sama no Brunch TBS Saturday morning program, and aired new one-minute episodes weekly until March 2018.
The first 10-episode Netflix season premiered worldwide in April 2018. Rareko, the director of the previous Aggressive Retsuko anime and Yawaraka Sensha, again directed the first Netflix season at Fanworks, and also wrote the scripts. The anime had a Christmas episode that premiered in December 2018, and then the second season debuted in June 2019. The third season premiere on Netflix in August 2020.