My Friend’s Little Sister Has It In for Me! [Season 1]

“My Friend’s Little Sister Has It In for Me!” Season 1: A Rom-Com Rollercoaster That Leaves You Wanting More

Let’s cut to the chase: if you’re here for a mind-blowing, genre-redefining romance, you might leave disappointed. But if you’re down for a cozy, messy, and surprisingly heartfelt ride with characters that feel like your chaotic friends, this show’s got your back. Blade’s 2025 adaptation of Ghost Mikawa’s light novel doesn’t break the mold—but it doesn’t have to. It’s the kind of anime you watch when you want something low-stakes, funny, and just a little bit frustrating (in the best way).

First off, let’s talk about the core of the show: Akiteru and Iroha’s dynamic. Akiteru’s the textbook “efficiency-obsessed” high schooler who’d rather optimize his study schedule than deal with drama. Iroha’s his best friend’s little sister—loud, teasing, and way too good at pushing his buttons. Together? They’re like oil and water… that somehow make a pretty fun salad dressing. Fans can’t stop gushing about their dance scene in the drama club episode (“The Akiteru and Iroha dance was sweet imo,” one MyAnimeList user raved) or their stage chemistry in the finale. Even when Iroha’s trolling him (which is always), you can’t deny there’s something there.

But let’s be real—this show isn’t perfect. The biggest complaint? The lack of progress. “No real romance at all, the story overall is pretty average,” a viewer groaned. And yeah, that’s fair. Every time you think Akiteru and Iroha might finally stop beating around the bush? She hits him with a “just kidding!” and he goes back to rambling about time management. It’s like watching two people play tag when they should be hugging.

Then there’s Mashiro, the quiet game developer who’s low-key crushing on Akiteru. Oh, Mashiro. Fans felt her pain when she had to watch her own love story play out on stage—with Iroha as the lead. “Mashiro got little character development,” one user pointed out, and honestly? They’re right. Her arc feels sidelined halfway through, like the writers forgot she existed until the finale. It’s a bummer, because her dynamic with Akiteru (geeky, supportive, actually able to hold a conversation without teasing) was one of the show’s hidden gems.

The side characters? Hit or miss. Midori’s bad luck subplot (getting stuck on a bus while trying to help a pregnant lady) had fans yelling at their screens (“It’s truly the worst of worse lucks!”), but she never gets much to do beyond being the “anxious friend.” The drama club members? They’re there… but you’ll probably forget their names by the next episode. Even the tennis team drama with Kageishi feels like a detour that goes nowhere.

But here’s the thing: the show’s flaws are part of its charm. It’s messy, it’s unpolished, and it doesn’t take itself too seriously. The finale, for example, is a hot mess of last-minute cast changes (Akiteru stepping in to act? Who saw that coming?), over-the-top play dialogue, and Iroha sabotaging her own confession again. But fans loved it anyway. “Great finale just what I’d expect from mikawa ghost sensei,” one user wrote, comparing it to Mikawa’s other work Gimai Seikatsu.

Let’s talk about the animation, too. It’s not Studio Ghibli-level, but it’s bright, colorful, and fits the vibe. The character designs are cute (Iroha’s pigtails and Akiteru’s perpetual deadpan face are iconic), and the comedy beats land because of the expressive art. Plus, the opening theme? A certified bop. Fans called it a “masterpiece”—and honestly, it’s the kind of song you’ll hum for days after watching.

So, who’s this show for? If you’re 20 or younger, you’ll probably relate to the chaos: the friend drama, the unspoken crushes, the way your plans always go off the rails. It’s like watching your own high school life, but with more dance numbers and fewer math tests. If you’re into slow-burn romances that take forever to get anywhere? This is your jam. If you want something that’ll make you laugh, roll your eyes, and maybe even feel a little warm inside? Yeah, this is it.

Is it the best rom-com of the season? No. Is it worth watching? Absolutely. As one fan put it: “It was… fine, I guess? Textbook example of 6/10 anime.” But sometimes, “fine” is exactly what you need. It’s the anime equivalent of a junk food snack—you know it’s not good for you, but you’ll keep coming back for more.

Will there be a second season? Fans are split. Some are begging for more (“Hope for a second season!”), while others are okay with how it ended (“It would have been good if we had some more focus on Mashiro,” a viewer noted). But even if it doesn’t get renewed, this season wraps up with a sense of “we’ll figure it out later”—which feels fitting for Akiteru and Iroha.

At the end of the day, My Friend’s Little Sister Has It In for Me! isn’t trying to be anything it’s not. It’s a fun, flawed, and totally human show about love, friendship, and the messiness of growing up. So grab your snacks, turn off your brain, and let Iroha’s teasing and Akiteru’s eye-rolls carry you through. You might not remember every detail, but you’ll definitely remember the feeling.

Final Verdict: 6.5/10. It’s not a masterpiece, but it’s a good time. And sometimes, that’s enough.