We learned about a new anime adaptation in the works in July 2021 with Kadokawa confirming that Mamahaha no Tsurego ga Moto Kano Datta aka My Stepmother’s Daughter Was My Ex-Girlfriend, had gotten the green light.
With plans for a 2022 debut, it has Shinsuke Yanagi directing it based on the scripts written and overseen by Deko Akao.
The light novel series from Kyosuke Kamishiro and Takayaki began in 2017 and has Kadokawa bringing it out in print in 2018.