Aggretsuko, also known as Aggressive Retsuko is a Japanese cartoon by the mascot company Sanrio. It began as a series of web episodes in 2016 before being picked up by Netflix in 2018 for two seasons. There is also a Christmas Special entitled A Very Metal Christmas which takes place in between seasons one and two.
25 year old Retsuko is a junior accountant at a company. She sings death metal karioke each night as a coping mechanism for all the workplace stress she is put under by annoying co-workers and pushy superiors.
Aggretsuko won the 2018 Ursa Major Award for Best Short Subject or Series. Outside of the fandom, it was nominated in multiple categories for the 2019 & 2020 Crunchyroll Anime Awards, but failed to win any.
- Aggressive Retsuko on IMDb