Introduction

As an otaku, there are some anime I know I’m going to love from the very first trailer — Kill Blue was one of them. Originally a 13-volume manga by mangaka Tadatoshi Fujimaki, Kill Blue has finally received an anime adaptation now streaming on Netflix, Crunchyroll, and Amazon Prime. The moment it dropped, I dove into both the sub and the English dub, and I have to say — this is a series I wasn’t quite expecting. We have now reached the three-episode mark, so my job for all you amazing readers out there is to answer one question: is Kill Blue worth giving the old three-episode test, or should you pass on it entirely? Here are our first impressions of Kill Blue!

Why You’ll Like This

Kill Blue feels like it was crafted to appeal to a wide range of audiences without sacrificing any one genre in the process. A blend of action, comedy, and drama makes it feel genuinely refreshing, even if the premise carries a faint Detective Conan energy. Legendary 39-year-old assassin Juzo Ogami takes on what appears to be a routine assignment for the Z.O.O. agency. A self-proclaimed righteous assassin who only accepts contracts targeting degenerates, the hit goes off without a hitch — until he’s stung by a strange wasp that reverts his body back to the age of 13. Despite his youthful appearance and voice, Ogami retains every ounce of his former intelligence and skill, which will now serve him on his new mission: attend middle school and ensure his boss’ daughter can do so safely.

I experienced so many unexpected reactions across the first three episodes of Kill Blue. I was laughing at Juzo Ogami’s distinctly older way of speaking — which resonates with me a bit too much as I creep toward that age myself — despite him looking like a literal teenager. I was equally leaning forward in my seat when Ogami unleashed his superhuman assassin abilities to take down a group of creeps who had kidnapped a young girl who may hold the key to restoring his original age. There’s a lot of depth and flavor packed into Kill Blue, which keeps it from collapsing into cliché and trope-heavy territory despite the premise seemingly inviting both.

A few more reasons I loved this series from the outset — and I’m confident you will too — are the visuals, opening, and ending themes. Animated by studio CUE — marking their first produced series, with two more already on the way — Kill Blue looks absolutely gorgeous. Filled with vibrant colors and confident animation styling, studio CUE could have fooled me into thinking this is the work of a seasoned veteran studio, not their debut project. The opening song, Attitude, performed by South Korean girl group aespa, has earned itself a brand new fan in me after I lost count of how many times I’ve replayed it. The ending theme, KILL SHOT by RIIZE, is equally solid. Kill Blue is hitting the full trifecta of what I want from a great anime — a great OP and ED, strong animation, and a compelling story — giving me a lot of hope for this manga adaptation going forward.

Is It Worth Three Episodes?

My reasons for loving Kill Blue should make the answer to this question fairly obvious. Without a doubt, Kill Blue is absolutely worth the three-episode test. Episodes 1 through 3 were incredible, and I have yet to see anything that suggests this series can’t sustain that momentum. The core concept isn’t entirely unseen in anime — I was briefly reminded of the isekai The World’s Finest Assassin Gets Reincarnated in Another World as an Aristocrat — but Kill Blue carves out its own identity and I’m fully on board for it. I do have some questions about the long game, particularly given that the manga concluded last year at 13 volumes while the anime is currently slated for 12 episodes. That said, if this series receives the love and attention it deserves, I’d expect multiple seasons — or at the very least, additional parts — to tell the full story of Juzo Ogami and his chaotic new reality.

Conclusion

Kill Blue hasn’t earned a perfect score from me just yet — even I’m not quick enough to declare something that after only three episodes. But I can’t deny that I’m very much enjoying this series so far. A killer opening, animation that looks like it came from a veteran studio, and a mix of hilarious and action-packed moments make Kill Blue a strong contender for one of the must-watch series of the spring 2026 anime season. Are you enjoying Kill Blue as much as we are here at SunsetNerdVerse? Drop a comment below and start the conversation! And while you’re at it — tell us how many times you’ve replayed Attitude. I may be approaching listen number 28 at this point.