Danica Davidson
April 26, 2022 
My Stepmom’s Daughter Is My Ex (Mamahaha no Tsurego ga Moto Kano Datta in the original Japanese) will be coming out this July, and a trailer has dropped. In it you can hear the opening theme song “Deneb to Spica” (translated as “Deneb and Spica”) being performed by DIALOGUE+. The trailer also gives more info on the cast and crew.
According to the trailer, Ikumi Hasegawa has been cast as Akatsuki Minami, Nobuhiko Okamoto has been cast as Kogure Kawanami, and Miyu Tomita has been cast as Isana Higashira.
Looking to the crew announcements, Yayoi Tateishi is the sound director, and Hiromi Mizutani of Non Non Biyori and Hell Girl is the composer. The music is being produced by Pony Canyon and APDREAM and the sound is being produced by Bit Groove Production.
J-Novel Club publishes the original light novels the anime is based on, and gave this description:
“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.”
Source: ANN
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Danica Davidson is the author of the bestselling Manga Art for Beginners with artist Melanie Westin. She is also the author of its upcoming sequel, Manga Art for Everyone, and the first-of-its-kind manga chalk book Chalk Art Manga, both illustrated by professional Japanese mangaka Rena Saiya. Check out her other comics and books at www.danicadavidson.com.
