My Stepmom's Daughter Is My Ex

In high school, a fresh start feels tempting after a painful middle school romance, but the restart backfires in a spectacular way. Mizuto Irido expects to leave behind messy memories, only to discover that his ex has transferred into the same school and now shares his home as his step sister. The prospect of peace collapses the moment she asserts that she is the elder sibling, a declaration that both stings and fuels his stubborn resolve. He insists on being the responsible older brother in this rearranged family, a stance he clings to with mock confidence. Behind the polite smiles, old feelings and resentments simmer, reshaping every hallway encounter into a test of patience and pride. The show uses quick visual gags and miscommunication to keep tension light while never fully denying the tug of past feelings.

Released in 2022, the show is the creation of Deko Akao, Kyosuke Kamishiro and Kanata Nakamura. It blends vibrant animation with sharp comic timing to explore awkward family dynamics set against a high school backdrop for a light romantic comedy.

There are no major awards or nominations documented for this title. The widely credited talent pool includes Hiro Shimono as Mizuto, Rina Hidaka as Yume, Ikumi Hasegawa, Nobuhiko Okamoto and Miyu Tomita, whose voices drive the brisk, approachable humor.

At the moment it has a modest footprint beyond its fanbase, with conversations among viewers focusing on the ethics of step family dynamics, boundaries, and the balance between affection and obligation. Its humor is light hearted and accessible to a broad anime audience. Some fans discuss its take on boundaries.

Critics and fans highlight the series for its quick banter, awkward situations and the way it reframes a forbidden romance as a family comedy. The core themes revolve around accepting imperfect relatives, personal growth and negotiating desire with responsibility, and the awkward tension that lingers after each encounter.