Joseph Luster
January 27, 2022 
The first teaser trailer has arrived for the anime adaptation of Kyosuke Kamishiro and Takayaki’s My Stepmom’s Daughter is My Ex light novel series, and it brought more info along with it. In addition to the debut promo, we also have a look at a new key visual along with plans for a 2022 premiere and some of the main cast and staff members.
First up, the teaser:
Visual:
Shinsuke Yanagi (Bottom-Tier Character Tomozaki) is lined up to direct, with Deko Akao (Komi Can’t Communicate) handling scripts and Katsuyuki Sato (Fire in His Fingertips) adapting the character designs for the Project No. 9 production.
Cast members revealed thus far include Rina Hidaka as Yume Irido and Hiro Shimono as Mizuto Irido.
Here’s how J-Novel Club, which publishes the series in English, sums up the story:
Ah, high school. Is there any better place to start fresh after a horrible middle school relationship? Nope! Not unless your ex ends up at the same school as you and is now your stepsibling. What was supposed to be a sanctuary of peace where I could avoid ever seeing her again has become a living nightmare! Everywhere I look, I see her—in my house, in my school, in my class. There’s no escape! She even claims that she’s the older sibling. Like hell she is!
But I won’t lose to her. After all, I’m the older brother in this new family situation. That’s right, we’re family now. No matter how much we may have thought we loved each other before, we saw one another’s true colors and realized we weren’t meant for each other. That’s why even though we may keep up a buddy-buddy sibling act for the sake of our parents, things will never go back to the way they used to be.
