- Acceptable Targets: 2channel users. They are portrayed as a bunch of unattractive losers, one of them is implied to be a pedophile, and assholes and you're really not supposed to feel sad for them when Shishigami kills them all.
- Early on, young people were either Jerkasses at best or sociopaths at worst. This was eventually toned down as the series went on.
- Donald Trump. Near the end of the series, he tells the public that crime is legal since an asteroid is heading for Earth.
- The manga also takes some subtle jabs at people who romanticize Hiro (going as far as to create fanclubs) based solely on his physical attractiveness.
- Alternate Character Interpretation: Something of a plot point regarding the Inuyashiki family and whether or not they would miss him if he was gone, especially when you consider that his eventual death was a Heroic Sacrifice and not in some deathbed from cancer like he thought.
- Anvilicious: Kids don't respect their elders and that's bad, m'kay?
- Awesome Moments: When Inuyashiki stands up to the teen gang for the hobo, with no clue about the full extent of his abilities or whether or not he'd even survive a second time. This is the moment that seals him as a hero.
- Awesome Music:
- Better on DVD: The manga is really fast-paced to the point where full manga volumes were fit into a single episode of the anime without too much being lost. The reader will get more out of binging it.
- Catharsis Factor: There's a reason why Hiro's killing spree against the internet trolls is such a memorable scene.
- Complete Monster: Samejima, from the Yakuza Arc, is a Yakuza boss who regularly abducts, drugs, rapes, and kills women. He is first introduced leering over the corpse of a woman he violated before forcing one of his underlings to give him a blow job. His next target, a woman named Fumino, manages to escape him before he could do anything to her. Determined to get Fumino, he tracks down her mother, who it is heavily implied he tortured to get Fumino's whereabouts before killing her. He orders his men to grab Fumino while he strangles her fiancé, Satoru, to death (but is thankfully revived by Inuyashiki) and seemingly kills Inuyashiki when he tries to stop him. Before Inuyashiki confronts him, it's heavily implied that he got what he wanted from Fumino. Samejima orders his men to shoot Inuyashiki in retaliation for beating him up. Even Inuyashiki, who loves nothing more than helping others, decides that Samejima is beyond redemption, blinding and crippling him.
- Draco in Leather Pants: Hiro. Which is ironic because the same thing happened in the manga - many misguided young women found him very attractive in spite of him being a serial killer, and created fanclubs for him.
- Ear Worm: My Hero. "Hit me on the ground, hit me on the ground, hit me on the ground..."
- Evil Is Cool: Hiro Shishigami runs on this. The series is most famous for him being the guy who kills with a telekinetic finger gun.
- Funny Moments:
"Umm... is there someone here who needs help?"
- There's something darkly comical about the fact that the plot is kicked off by aliens crashing to Earth out of nowhere, who then go into a panic trying to cover up the accident as if they had crashed their parents' car without damaging it too noticeably. One suggests they blow up the whole planet, but instead they quickly build robot bodies for the two people they killed, before they GTFO and never show up again, almost like a Big-Lipped Alligator Moment.
- After the yakuza episode, Ando reasons that there's someone else out there with all of Shishigami's powers down to the Super Senses, and the best idea he has to reach out to this person is Crying Wolf in his own room. Cue Inuyashiki showing up at the doorstep faster than any Uber.
"Yes, this is my illegitimate son..."
- The training sessions with Ando involve Inuyashiki putting a finger on a laptop, which apparently causes his inner mechanics to adapt to human technology, causing a USB port to sprout from his finger, very reminiscent of Nano from Nichijou.
- After figuring out how to receive phone calls in his head, Inuyashiki starts testing the extent of his jet thrust by going straight up - he marvels at being above an airliner, and later freaks out upon seeing something even bigger. Cut to Inuyashiki hovering next to the International Space Station, in full view of an astronaut who literally can't even.
- Mari finds out by accident that Inuyashiki has been spending a lot of time with Ando, and we get one Imagine Spot after another, and a rare insight into what kind of manga Mari might end up writing:
"I actually like younger men..."
- Inuyashiki himself is apparently such an unmemorable person that even after he's seen plain as day on national and international TV using his powers to rescue and heal people, none of his coworkers recognized him. Even his family is baffled.
- Genius Bonus: When Inuyashiki finds out he has terminal cancer and that no one in his life would care, he cries in a park while swinging and singing a nostalgic song to himself. It's a direct homage to one of the most famous scenes in the 1952 Japanese classic film Ikiru, in which the main character faces similar despair (terminally ill, unfulfilling life, uncaring family). The anime takes it one step further by recreating the scene almost shot-for-shot. While the film might be recognizable to some Japanese viewers (similar to Casablanca or The Godfather in Western cinema), most foreigner outside of movie buffs wouldn't even know about it.
- Harsher in Hindsight: Numerous nods to One Piece abound throughout the series. Inuyashiki became a major victim of piracy (at least in the US) due to desperate fans who couldn't afford the double-paywall required to watch the series legally on Anime Strike.
- Anime Strike arguably doomed Inuyashiki to obscurity before it even aired, as was the case with Re:CREATORS and Land of the Lustrous. Less than a month after the finale aired, Amazon killed Anime Strike and made the show accessible to all Amazon Prime members; one can only speculate how popular the show would have been if such a decision had been made earlier in the Fall 2017 season.
- Love to Hate: Hiro Shishigami is an absolute bastard who mass murders in cold blood, but at the same time he's just so compelling to watch.
- Memetic Mutation: Hiro's finger guns have been compared to those from Cuphead by many online.
- A scene of current US President Donald Trump announcing the meteor strike also went somewhat viral in the US. Needless to say, American fans didn't take it well considering Trump's overwhelming unpopularity.
- Moral Event Horizon: Hiro crosses it in episode 2 when he casually slaughters a family, especially letting the father's corpse drown the son in the bathtub and killing the daughter because she didn't share his taste in manga.
- Samejima crosses it as a hobby. Even Inuyashiki, who prefers non-violent methods of dealing with his foes, felt it was appropriate to give him a No-Holds-Barred Beatdown before blinding him and his syndicate.
- Narm: Shishigami mimicking the sounds of a machine gun while Finger Gunning. On the other hand, its a Narm Charm that demonstrates how even the strangest of teens can be monsters.
- Shishigami talking casually with a girl about One Piece and asking her about her favorite character after killing her family in cold blood can be read as this depending on your perception.
- Paranoia Fuel: Shishigami is an unstoppable, all-powerful, all-seeing robot with the power to kill anyone he wants effortlessly, and he doesn't even need to be in your vicinity to do it as long as there's anything with a digital camera nearby. He can remotely hijack vehicles, from cars to commercial airliners. And he's a sociopathic Serial Killer and eventually a full-blown Omnicidal Maniac out to kill every single person in Japan. Unless you're another godly-powerful robot like Inuyashiki, if Hiro wants you dead, you're dead.
- Signature Scene:
- Hiro's first killing spree.
- Inuyashiki flying for the first time while he sings the theme song to Astro Boy.
- Inuyashiki's battle with the Yakuza.
- Hiro's killing spree against the 2channel users.
- Inuyashiki and Hiro fighting each other while they're both unconscious on autopilot.
- Some Anvils Need to Be Dropped: You always have a chance to make a positive impact on the world, no matter how old you are, or how much bad you've done.
- Stoic Woobie: Inuyashiki himself, especially before his transformation. While he struggles to be a good husband and father, deep inside he suspects that the only creature that would miss him if he died is his dog.
- Tear Jerker:
- When Inuyashiki finds that despite having a stomach cancer and only a few months left to live, his family may not miss him at all when he dies, he has a breakdown.
- As Inuyashiki flies to the asteroid, his beloved dog futilely tries to chase after him.
- Inuyashiki and Hiro sacrifice themselves to destroy the asteroid heading to Earth. Prior to activating his self-destruct mechanism, Inuyashiki promised his family, pet dog and Ando that he will returned but fails to keep that promise as everyone he loves watch him performing the ultimate sacrifice. In the epilogue, his children continue to mourn him.
- They Wasted a Perfectly Good Character: The aliens that made Inuyashiki and Hiro into androids never appear again after the inciting incident.
- Wangst: While Inuyashiki's reaction to finding out he has cancer in episode 1 is no doubt a reason for him to be depressed, what causes him to break down is his personal belief that his family won't miss him even though he never even told them.
- Uncanny Valley: Look at his porcelain-like, perfect face... doesn't help that Shishigami became a serial killer just now.
- Unintentionally Unsympathetic:
- Inuyashiki, despite being the lightest shade of white imaginable, doesn't even attempt to give Samejima a chance at redeeming himself despite the series' very Anvilicious stance on it. Sure, he probably wouldn't have taken it, but if anyone else in the story had permanently blinded and crippled a group of men, it would likely be treated as a vicious Kick the Dog moment even considering they're criminals, which makes it worse coming from the most heroic and forgiving character in the series. To make it even worse, he's willing to forgive Hiro despite the fact that his body count ranges into the thousands, and he even tried to kill Inuyashiki's own daughter.
- Hiro at the end is treated as redeeming himself by killing himself to stop the asteroid from destroying the earth. That doesn't change the fact that by the end of the series, he'd killed thousands of innocent people just for fun, and doesn't seem at all remorseful about it.
YMMV / Inuyashiki