

Detectives These Days Are Crazy!
まったく最近の探偵ときたら
In the detective business, everyone knows the name Keiichirou Nagumo. Back in high school, he was called a genius for cracking tough cases that even the police could not solve. But those days are long gone—or so the rumors say. However, one day, an unexpected visitor barges into his office: Mashiro, an energetic high school student who demands to be hired as his new assistant. Although Keiichirou tries to brush her off, Mashiro is persistent. She is determined to become a detective, and to prove her worth, she begins by teaching him about the latest technology and offers a fresh perspective on his business. Thus, Keiichirou takes Mashiro on as his assistant and embarks on a brand new chapter in his career—one where he finds himself constantly surprised by the modern generation of detectives. [Written by MAL Rewrite]
In the detective business, everyone knows the name Keiichirou Nagumo. Back in high school, he was called a genius for cracking tough cases that even the police could not solve. But those days are long gone—or so the rumors say. However, one day, an unexpected visitor barges into his office: Mashiro, an energetic high school student who demands to be hired as his new assistant. Although Keiichirou tries to brush her off, Mashiro is persistent. She is determined to become a detective, and to prove her worth, she begins by teaching him about the latest technology and offers a fresh perspective on his business. Thus, Keiichirou takes Mashiro on as his assistant and embarks on a brand new chapter in his career—one where he finds himself constantly surprised by the modern generation of detectives. [Written by MAL Rewrite]
Maverynthia
September 17, 2025
It starts out with ecchi and by the end it's nothing but boob jokes for humor. Or the fact that a woman is actually strong, because having a strong women is humorous and gross or something, There's a good part in the middle where the humor doesn't seem to rely of throwing one of the main female characters under a bus, but at the end it's only that and wears out it's welcome. The only gags for the men are how old Negumo is (at 35/36 which is NOT that old) or how much of a misogynist Asuno is to women. (Yes constantly sexually harassing womenmakes you a misogynist.) The last episode tries to bring it around, but by that time we've had too many episodes of that same thing. Also having all the male characters look ugly didn't help the work either.
TK_Tay
September 17, 2025

Grand Blue
Detective's These Days is not exactly an innovative or interesting work. It's a referential comedy that deals in referencing detective media (and often many other things, a la Bobobo or Gintama), and that comedy is fine. It receives inconsequential little guttural laughs every episode, some episodes moreso than others, but the big issue is that this is the epitome of seasonal anime, in that I could not imagine watching this beyond a seasonal setting, nor could I imagine reading the manga for this. That's not a bad thing, it's just that now that it is over, I can't heartily recommend the work. It's fine, it's occasionallyfunny, the art is good, character are endearing, but this isn't actually Bobobo or Gintama. It's not some hilarious comedy I could sit and watch for hours, it's one I could watch for 24 minutes a week with minimal effort on my part to think about it or seek it out beyond the obligatory search on those sites. Thematic depth is not a concern of this work. Deep characters is not a concern. Mashiro starts as a loudmouth idiot and ends that way, and the same is true of every character. The opening and ending essentially tell you everything you need to know about the anime. Nagumo is shown dealing with the horrors of being incredibly old (mid-30s) in the opening song, his body is in pain, his looks are fading, he needs glasses, and the lyrics pair well with that. In the ED, Mashiro dances to a song explicitly about herself as wacky random things happen and there's glimpses of a tomorrow (the next episode preview), one that Nagumo lacks. That is Detective's These Days. That's it. That's the show. It's not deep, it's not special, it's not particularly funny, but I will look back on it fondly, and I'll listen to the OP and ED whenever I need a dose of 2020s nostalgia when I become a decrepit 35 year-old man who can't understand the kids these days.
KANLen09
September 16, 2025
Detectives These Days Are Crazy! — Yep...crazy as they can be, no matter the profession. If I have one thing to admire about authors who can get their shit right, it's going from one genre to another that, honestly, baffles one's mind as to how he/she can do one thing well but yet also have a sense of unbridled sarcasm to create another that does the job equally as well. Ladies and gentlemen, I present to you mangaka Masakuni Igarashi, the author of Spring 2018's slice-of-life rom-com series Senryuu Shoujo a.k.a Senryu Girl, following up with yet another adaptation of his comedy mystery series this Summerwith Mattaku Saikin no Tantei to Kitara a.k.a Detectives These Days Are Crazy!, as well as the much-anticipated rom-com series Mayonaka Heart Tune a.k.a Tune In to the Midnight Heart, that's set to air next year (which if you haven't got around to hearing of this manga, PLEASE read it as it's easily one of (if not) the best modern rom-coms of this era). But back to Mattaku Saikin, I've got to say that it's the equivalent of going into a carnival full of games but going specifically to the Whack-A-Mole play counter and just failing and succeeding at whacking moles at the same time. I say this because when you put a once-respected ace detective who has the spirit of Phoenix Wright of "never say never," only for age to catch up with him so much that he doesn't feel like doing the detective act anymore, he needs some colour to decorate his detective agency that's seeming to bleed out both talent and money from the beams. So, what is the saving grace of the agency? A high school girl who shows up out of nowhere, who is literally Doraemon without the charm and the suit to do extravagant things in the name of brute force, and who comes off just as unhinged as the detective himself, if not more so. The life of 35-year-old aging detective Keiichiro Nagumo, who struggles with modern technology with aching hips and back issues, will never be the same again with the arrival of bubbly Gorilla girl of Mashiro Nakanishi, who does the jobs for him so much that he reluctantly allows her to stay and become his apprentice, doing all of the oddity jobs that some are, and some are not, detective-based. For one, I did not think that Masakuni Igarashi would go one step further to present his version of the unhingedness of the show in general, not after the comparison with the rather light-heartedness of Senryuu Shoujo that just causes me to spasm out in disbelief that he could just whip up nonsensical stories, laden with cultural references left and right, and call it a day, presenting the many sides that are happening within the Nagumo Detective Office. Yes, it does take some getting used to since this manic show does not work in your usual rank-and-file storytelling of comedy-mystery series, but once you do, you're just bound to have a good time. And yes, what's a colourful series without colourful characters, without telling me that the Nagumo-Mashiro partnership is, without a doubt, one of the most deranged I've seen in quite some time? Sometimes, taking in a stray cat feels like the norm when life gets a little cold, and with permission from a client that feels like they didn't treat her request with respect to find her pet, Cerberus is born as another figure in the flailing office. Even better is gaining another member, though Taro Nezu is just your average low-level Yakuza after the agency gets a job to eliminate his group, sparing his cowardice in the process for him to join their ranks. Like all detectives, one has another to look up to, and the human comes in the form of Yuu Asunaro, who develops his own detective work after being inspired by Nagumo, and a female fanbase that just adores him like an idol, though the same could not be said for his assistant Hana "Maki-chan" Kazamaki, who shows her true chops being his true fangirl who'll go to the ends of the earth with him on his detective work...and seemingly, also crushes on him from time to time. Sure, Nagumo even has his old friend of the same age, the civil servant Soya Mimasaka, who sees and also acts like him in regard, though his daughter Fuu is just jealous of the former and is always somehow pissing Mashiro off by her looks so much that these two become nuisances to each other. Oh, wait a minute, what about the Great Big Four perverts, who are vigilantes in their own right as well? The striking men, in all of their various man bodies, from 6-packs to fatsos, are the obvious nuisance to society, but it's oddly satisfying seeing them deal justice at unexpected times, though getting caught by the police just seems like the recurring gag each and every time that never fails to get old. So, it's pretty much in-your-face comedy, and that'll decide if this show is up your alley. For a show of Liden Films's standard, this is just pretty much serviceable for the most part, in that nothing truly stands out, other than the few times to show a lot of the insane moments that the anime has to offer. Even the OST is decent but nothing noteworthy, alongside Taiiku Okazaki's OP and the VA's ED. All in all, if you just want to have a sense of what it's like to be a lunatic and maniac all at the same time, Mattaku Saikin no Tantei to Kitara a.k.a Detectives These Days Are Crazy!, will absolutely drive you crazy, and I can guarantee this to the nth degree. Better have a good time or face instant regret for what you chose to step your foot into with this show.
Otaku_Senpai
November 1, 2025
I think you can get from the title of the show that this will not be a very serious anime. This is a slapstick/parody anime where the the girl detective Mashiro seems to follow cartoon laws. For example she can hide and bring out tons of stuff that she hides under her clothes. She can run super fast and jump high. Part of the humor is the contrast of the two personalities, one middle aged man and the other a high school girl, and the interaction between them. Personally I like it when a detective show takes itself seriously and where there is tension . I like theOP/Intro and ED/Outro songs. My Rating: 5/10 (Mediocre)
Apu-Hasan
September 17, 2025
Are you fan of gag humor? Are you stressed? Wanna feel good with laughter? Then yes this anime is recommended. A good comedy show is rare now a days. Specially with gag humor and not making it weird. This show did it perfectly. Also Kana Hanazawa nailed her role which made this show even more funnier. Any last show that made me feel good with their comedy was Vampire dies in no time (Excluding Konosuba). I know this will not be much popular nor it'll advance but we at least got it. The story is quite simple just goes on with some detective work. Which leads us to know about peopleand their days. The cost did amazing job. The sound quality was pretty good too. Specially The ED Gori⭐Gori Feez-e-Girl was a banger. The animation was great. Which made this show much better. The pacing and consistency was good. I rate this a solid 7/10. You can watch it in one go too & won't feel bored.
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Episodes
12