

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.
7.2
Avg Rating
12
Rated Episodes
8.0
Best: S1E7
6.4
Worst: S1E9
Higashira Isana Doesn't Know What Love Is
S1 E7
The Former Couple Spends the Night
S1 E5
The Former Couple Goes Head-to-Head
S1 E6
Youthful Indiscretion
S1 E9
My Ex Has a Confession to Make
S1 E3
My Ex Needs Taking Care Of
S1 E2
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Mizuto and Yume used to date, but now they've suddenly become stepsiblings. Both of them agree that they don't want to do anything that'd disappoint their newly remarried parents. However, neither of …
After entering high school, Yume was making an effort to change her personality and looks in an attempt to reinvent herself as a model student. It was all so far so good, but there was one thing she c…
It's nighttime at the Irido residence. Yume has somehow found herself with Mizuto's boxers in her possession. If Mizuto were to find out, it would almost certainly mean she would have to face the puni…
As punishment for the underwear incident, Mizuto demands Yume go on a date with him. Yume is taken aback by the sudden development, but little did she know that it was all part of Kawanami Kogure's de…
It's Mother's Day, so Yume and Mizuto go out to buy a gift together. Their mother, Yuni, is overcome with happiness to receive a gift from the two of them. Seeing how happy it made her, Mizuto wonders…
The first midterms of the school year are upon them. Once the top scoring student in the school's entrance exam and now a talented student at the top of her year, Yume is anxious to defend her positio…
Due to their mutual interest in light novels, Isana considered Mizuto a dear friend. However, Yume and Akatsuki make her realize that her feelings for him may run much deeper than that. Now aware of h…
E8 · The Former Couple's On Edge "I've Already Been Rejected, So It's Fine."
Isana is coming over to the Irido house this weekend to hang out with Mizuto. Suspecting that she may not know how to properly dress for the occasion, Yume and Akatsuki invite Isana out to go clothes …
We are brought back in time to when Yume and Mizuto were once a couple. A time when neither of them could control their nerves in what was their first ever relationship. Having already held hands and …
E10 · The Former Couple Doesn't Know How to Act "Aren't You Two Acting a Little Awkward?"
It's Yume and Mizuto's first summer together as stepsiblings. Their parents are unable to return home one night due to a typhoon. Now alone in the house together, trouble arises when Yume spots a cert…
E11 · The Former Couple Visits Relatives "I Guess You Could Say She Loved to Laugh"
The Irido family go to the countryside to visit relatives. There, Mizuto shows Yume the first book he ever read on his own, his great-grandfather's autobiography. Reading it prompts Yume to ask him wh…
Still in the countryside visiting relatives, Yume and Mizuto head to the local summer festival together. In high spirits from getting to see him in his yukata and seeing how Madoka and Chikuma interac…