Review of Days with My Stepsister

"What are you doing, stepbro?"—a classic line that transcends media. Whether it’s the category it originated from or its spread into anime, the concept of "stepsister" shows isn’t new. Everyone’s heard of Domestic Girlfriend (DomeKano), the infamous trainwreck of a series. But Days with My Stepsister is nothing like that. While DomeKano keeps you on edge with its sheer absurdity, this anime is boring—and that’s the best part. Now, don't tune out just yet. Seasonal anime come and go, with the industry throwing countless forgettable shows at us every few months. Believe me, I know. So when you come across a title like Days with MyStepsister, it’s easy to dismiss it. But if you do, you’ll miss out on one of the best shows of the year—and that’s no exaggeration.

This show isn’t what you think it is. So, what’s it about? If I had to sum it up in one word, it would be "realistic." Yes, a romcom about two people who suddenly become step-siblings and live under the same roof is realistic. Trust me. The show values realism above all else, making it the ultimate form of clickbait. It presents a fictional setting filled with fictional people, but in the most realistic way possible. It’s basically a mundane drama, which might sound boring, but it’s that very mundanity that makes it shine. Nothing extraordinary happens.

Outside the initial premise, everything is truly ordinary, and that’s the magic of this show. Of course, credit shouldn’t go to just the writing. Presenting such a subtle concept through a medium as over-the-top as anime requires top-notch direction, and thankfully, it got just that. More on that later.

The story centers on a small cast of characters, and since not much happens plot-wise, the characters need to stand out. Yet they don’t, at least not in the traditional sense. They’re well-written but never exaggerated.

The male lead, Yuta Asamura, and the female lead, Saki Ayase, are both similar and different at the same time. It’s a cliché phrase, but it’s true here. Both saw their families fall apart at a young age and came to the same conclusion: expectations lead to conflict. They witnessed people expecting others to act in certain ways, found it unreasonable, and decided to live their lives without letting anyone expect anything from them.

Here’s where they differ. Yuta preferred to be an ordinary, unremarkable person in the background, while Saki took the opposite route, cutting people off to prevent them from placing expectations on her. When the two meet, they recognize their similarities and start to bond, agreeing not to expect anything from each other. This becomes the core of the story: the slow process of these two characters dropping their guards and opening up to one another.

On paper, that might seem easy to pull off—just words in a light novel—but translating it into an anime is no small feat. Establishing all of this in the very first episode required focused, meaningful direction, and that’s exactly what it got. The series is directed by Souta Ueno, and given how phenomenal his work is, you’d think he’s an industry veteran, right? Wrong. This is his debut project, and he’s only been in the industry for about seven years. On top of that, the show has almost nothing to offer in terms of actual animation. Movement is rare and often stiff, yet somehow, Ueno made it work. He managed to translate the subtle, nuanced writing of the novel into an anime with almost no resources. Souta Ueno is a genius who clearly understands the source material and its appeal, presenting it with surgical precision.

I won’t dive into every episode—or even just the first one—because we’d be here all day. But know that from episode one, the show makes it clear what it's about: the mundane, everyday actions and subtle emotions of each character. Once that foundation is laid, the real story begins. The dynamic between the two leads is fascinating and constantly shifting.

Another fascinating aspect of this show is its dual perspective storytelling. Instead of being an omnipresent third-person observer, we see the story unfold from the point of view of the character we're following. Most of the time, we see things through Yuta’s eyes, and we only know what he knows. But occasionally, the perspective shifts to Saki—through her diary, as they call it—where we learn what Yuta doesn’t know. The same applies when we’re with Yuta; we aren’t privy to Saki’s thoughts. This back-and-forth allows us to watch their dynamic evolve from both sides.

The show features very few side characters. There’s Maaya Narasaka, the most romcom-like character, with her bubbly personality and bright red hair, injecting joy and comedy into the story. Then there's Shiori Yomiuri, another character weighed down by expectations. In the novels, she’s compared to the Yamato nadeshiko, the ideal of modest, beautiful, and dignified Japanese womanhood, though her actual personality contrasts sharply with that image. Despite the small cast, there’s a lot happening, and the anime conveys all these ideas perfectly while adding a few of its own.

The direction is consistently impressive. The aforementioned diary scenes, even on their own, look fantastic. They're presented in a fragmented style, much like a real diary, with long, lingering shots and realistic camera placements that give them an authentic feel. This, of course, adds to the show's laid-back, everyday vibe. I mean, at one point, there’s a full-on fucking lofi music video right in the middle of an episode… LOL. It was absolutely gorgeous to watch, but I won’t spoil too much—you’ll have to see it for yourself.

I’ll wrap this up by saying that this is one of the most uniquely written works in its genre and one of the best-directed anime in recent memory. It sets a gold standard for adaptations. If it wasn’t obvious already, I highly recommend giving it a shot—it’s truly incredible.

It’s not the kind of story about step-siblings you might expect. It’s just about a stepbrother and his days with his stepsister.