Right. Imagine the bastard offspring of Elfen Lied 's wanton gore and nudity with Neon Genesis Evangelion 's disturbing nature and outright insanity. Then put that on crack and toss it in a septic tank. That's Gantz.Gantz is a horror/sci-fi series by Hiroya Oku. As it begins, Kei Kurono, a rather unpleasant teenage student, is run over by a train after he and his childhood friend Masaru Kato rescue a hobo from the rails. Instead of being dead, suddenly Kurono finds himself trapped in a small apartment along with Kato, a bunch of weird people (including a hot naked girl, a dog, and a middle-school boy who seems to be the only one who knows what's going on) and a large black sphere.The sphere names itself Gantz, sings an exercise song, and explains the situation: They were dead, but Gantz needs them for the mission of killing a weird alien creature (the first of a series, as it turns out). The rules are easy: They have one hour to complete the assignment. If they are hurt but alive at the end of the time, they are fully healed, but if they are killed they'll remain dead. If they get too far outside the hunt area they will die. Their performance will be measured for points; when they get 100, they can be free. With all that said, Gantz gives them high-tech battle suits and some futuristic equipment and armament, and launches them into the mission.Then giants invade Earth after about 300 chapters...Essentially, the first nine volumes (and the whole anime series) consist of senseless killings; gory, horrific violence; Fanservice; and sex scenes. Then, the manga began to improve when Kurono was given a romantic interest and an impressive Character Development. And then, "vampires" are introduced, some secrets are revealed, and things become truly weird and extremely convoluted. The fights also become longer and longer, to the point they seem interminable.In the manga's third and final phase of the story, things all over the world become horrifically worse for everyone. Oku had planned to end the story in 2012, but it ultimately wrapped up on June 15, 2013.A two-part live action Japanese movie adaptation was released in the winter and spring of 2011.
Action Girl: Some of the female Gantzers. Reika definitely qualifies, as does Anzu Yamasaki from the Osaka team. Even Kishimoto got some moments. Sei Sakuraoka is a tremendous secondary character example.
Adaptation Distillation: In the anime, Nishi killed himself by jumping from a building rather than being thrown by his classmates.
Aliens Are Bastards: Played with. Most aliens seem to just be "there", not causing much trouble for humanity until the Gantz team tears up their shit... but then many become violent, sadistic assholes as soon as they can, and sometimes it's not as if they were completely harmless before being targeted for extermination (the Oni aliens for instance are basically a large gang of thugs, who based on their dialogue probably committed their share of mugging, beating and raping humans). Then in the manga the giant four-eyed aliens come along, and do things like indiscriminate planetwide mass-slaughter, harvesting and snacking on humans in viciously sadistic ways... and happen to be physically and psychologically the most human of all aliens.
Anyone Can Die: Twice, even, if you're a Gantz participant. Sometimes more. The manga's last phase extends this to THE ENTIRE HUMAN SPECIES.
Apathy Killed the Cat: The characters could be noticing details pertinent to their survival, but they're too wrapped up in personal crises dealing strictly with their own feelings and desires.
Asshole Victim: Well, you usually don't feel very sorry for all those yakuza guys, bandits and rapists when they're slashed by aliens.
Attempted Rape: It happens to Kishimoto soon after she's introduced. Also, Reika by cloned Kurono, except she was in love with him anyway...and had actually invited him into her bed that very night. The realization sort of kills his appetite and he backs off., and Tae.
Author Appeal: If you don't see a naked or virtually naked female and/or a sex scene once every 5 or so chapters, you're reading the wrong series. That being said, the only sex scene with the real Reika was tremendously modest.
Awesome, but Impractical: The guns in the series, while extremely powerful and more than capable of beating the targets, take absolutely forever for their fired shots to reach their targets. Even then, there's a time lag before the ammo finally decides to explode. Of course, it's not like the hunters have any other weapons, so what choice do they have? Subverted in the last hunt in the anime, where the timelag was removed on the guns, making them far more deadly.
Back from the Dead: Scoring 100 points allows you to bring someone back from the dead. In the manga, this actually gets used to bring back a few of the dead Gantzers, including Kato, Nishi, and Kurono himself. In the movie, Nishi's dying wish is for someone to get 100 points and bring him back.
Daizemon Kaze. In his first mission he beat a friggin' dinosaur to death without the suit.
Kurono qualifies very quickly for this any time he's put in a situation where he lacks his suit. He freaks the hell out about it every time (because the suits increase the odds of living greatly) but still manages to live through battles.
In the manga, Kurono later qualifies again when he manages to kill over a dozen vampires lacking both his suit and his memories, having opted to take the choice of leaving the Gantz team.
Reika also qualifies in a later chapter, as she manages to jump from 0 points to 100 in a single mission, making her the first main character to reach 100 points twice. This becomes even more apparent when you notice most of the team didn't even get a single point.
Bait-and-Switch Boss / Trick Boss: Several missions feature these. The wimpy Onion Alien that was on the readout in the first game had a much bigger, much more dangerous teammate (his father, by the way, in case you missed that). Half the team was dead before it was done. The Buddhist temple mission is another excellent example. Also, the "Mr. Tanaka" aliens, which are nothing more than minions/kids. The Dinosaur Arc sort of subverts it when Gantz identifies the "Boss" from the beginning, then played it straight when the boss grows from the size of a kid to a giant humanoid creature, and even then he is not nearly as dangerous as the final dinosaur in that mission.
And the final bosses are not related to the game much.
Bath Suicide - Kishimoto; subverted, however, as she actually survives, causing complications later.
BFG: Considering what they do to their targets, all of the weaponry could qualify, but especially the huge guns used by the Osaka team and the H-Gun.
BFS: The katana from Gantz arsenal that can alter its length to ridiculous levels. It was once used to slice a dinosaur in half. Vertically
Butt Monkey: Kurono's classmates think he's a "Daytime Lantern", i.e. completely worthless, and generally treat him like crap. One of the highlights of this is when an old bully brags to Kurono's face about how he scored the girl Kurono had a crush on when they were younger.
His name actually ties in nicely to the fact that his second life, as a complete badass, happens during the night. Then during the day he's just plain old Kurono.
Inaba within the Tokyo Team. If being tricked into doing a male alien disguised as his crush Reika and getting seen by the real Reika doesn't suck...
"Woah, it's Reika!"/"She looks like Reika!" - wherever the Tokyo team is seen by others, you're guaranteed to hear this. In the Gantz room. During a mission in another city. During the end of the world. From the aliens. Italy's seemed to be the only place free of Reika's fans thus far. Or maybe everyone there is pretty much too dead to care about her.
Cloning Blues: All of the hunters are duplicates created just before the death of the originals. Sometimes the original actually survives - just ask Kishimoto. Things get even more interesting when Reika revives a third copy of Kurono when the second is still alive (the first clone of him has been killed earlier on).
Clothes Make the Superman: Without their suits, the "hunters" are nothing more than normal humans with guns that have a long delay between impact and effect.
Cluster F-Bomb: The English dub and the subtitles of the anime. Gantz tends to curse every other line in the manga.
Complaining About Rescues They Don't Like: When Kato rescues a civilian and his family from a youkai alien, the man upbraids him for initially hesitating. Also, many of the civilians that Kei rescues during the giant alien arc criticize him for not doing more for them.
The anime is more modest about it, and features only a few locations and aliens modeled in 3D. The CG at the Buddhist Temple mission is most notable; both Gate Guardians and the Living Armor are mostly in 3D, and a few shots of regular 2D animation make up the interim.
The artist obviously produces the graphical representations of all weapons in the manga and a good deal of the technologies using 3D modeling. He then applies varying levels of 2D art and other post-production refinements over those models, to make them fit in better with the general art style. (The artist even details the process by which he does this in an early chapter.)
In later chapters, Hiroya Oku increasingly employs 3D modeling on top of real photographs to portray scenes of destruction, to the point where on some pages it entirely dominates the scene and hand-drawn art stands out as perverse kind of Conspicuously Light Patch. This technique would lead a reader unfamiliar with the manga to become confused, as the scenes of destruction look like an entirely different comic.
Dead to Begin With: Somewhat true. While Kurono and the other players are technically alive, they're only clones with the same memories as the original people, not the original people themselves. In other words, Kurono really did die on the train platform along with Katou at the beginning of the series. Hell, we even see Katou and Kurono's severed heads flying through the air before they're taken.
Sei Sakuraoka is killed the mission after she joins and has sex with Kurono. To be fair, most people died that time.
Partialy subverted since the only one who did survive that mission was the guy who had sex with her.
Kuwabara Kazuo, one of the members of the Osaka team is so sex-crazed, that he decides to rape the Nurarihyon's giant feminine form as some sort of goodbye ritual when it's obvious he's about to die. Despite having his arms and legs melted down by the alien, he does manage to survive when the monster, repulsed by his sperm, spits him out and Kato orders Miho and Sumiko to carry him away.
Death Is Cheap: Both played straight and subverted. Dead players can be revived at the cost of 100 points, but getting 100 points is about as far from "cheap" as Reika is from flat chested.
Death Seeker: Kurono, briefly, as the first stage of his Took a Level in Badass transformation.. Widower Occhan (Gramps/Old Man), who doesn't seem to mind either way, anxious to rejoin his lost wife, but still in the fight for his pride and his friends. Not fearing death, he is unwilling nonetheless to accept a meaningless one. Also, he seems mesmerized by the can-do possibilities of the suit and playing The Lancer to Kurono's lead, putting his death-seeking on hiatus.
The Determinator: Kato became one trying to be more like Kurono. Kurono became one trying to be more like Kato.
Did You Just Flip Off Cthulhu?: After successfully rescuing a lot of humans from the giants and scoring their first real victory, the Gantzers take a group whiz (yes, even the females; it's technically possible, though it can be messy if you're not careful) into the same tanks that were used to decontaminate them like animals. The only way it could be more awesome is if they were whistling the "New Morning" theme as well.
Cthulhu kept a grudge. And responded promptly and explosively.
While they are not exactly super weapons, the Teleport Guns are extremely useful, being a Hit Scan weapon, while all the other types of guns have a delay between pulling trigger and stuff blowing up. They are used only two or three times in the entire manga, mostly by Kato.
Also, the Monocycle, which provides great speed, mobility, has extra seat for a shooter and can crush lesser aliens; it was used exactly once by Kurono's team.
The cloaking devices, too — the few times they use them, they're shown to be unbelievably effective (even against the vampires, who have ways of detecting you while cloaked), but most of the time everyone just seems to forget they exist even though there's no logical reason to ever be uncloaked during a mission. It's probably not a coincidence that the two characters who we're told survived long enough to be veterans, Nishi and Oka, actually do spend nearly all their time cloaked during missions; nobody else seems to catch on.
Well, not being able to see your own teammates can be a pretty significant disadvantage, so there's that reason to be uncloaked. They still don't use them nearly as often as they should.
Cloaked players see all other cloaked persons in their field of vision. Seen in Tae mission when they actually manage to fight each other on the alternate frequency... However, only guy to die for being seen got photographed while switching frequencies somehow, and his head exploded. And, also, it seems real world vision is significantly diminished/darkened when stealthed.
Gag Boobs: Kei Kishimoto. She's not too happy about that. Gantz, who tends to give players unflattering nicknames, refers to her as "Tits" (and while the portraits it displays of most players are just stylized representations of their faces, the one of her includes a substantial portion of her boobs also). Also, Gantz likes to mock the well-endowed Reika, whose breasts get bigger during the series. Her rack actually saves the team from getting killed; see Mexican Standoff below. And then there's Sei, who's a Lara CroftExpy with all that implies ... you know, it might actually be easier to list the named female characters who don't have Gag Boobs.
Hello, Nurse!: Kei Kishimoto had a bit of this going (read:everyone wanted to rape or harass her), but add the fame to the boobs the beauty, and you have Reika. Everybody's fapping over Reika, fortunately except most of her teammates, who're too young, too old or too outstanding, so it's not causing major problems...until Reika herself fell for Kurono and discovered she cannot have him, which made her very frustrated.
Heroic BSOD: Kato. In the early segments, every time he's faced with a choice to take the shot, he immediately breaks down. In the Buddhist Temple mission in the anime, the team happens across a dead bum and Kato decides that immediately after telling everyone they need to hurry and finish the mission is the perfect time to take yet another angst break. Kurono, who's presumably even more fed up with it by now than the audience is (which is saying something), angrily calls him out on it.
Kato: [half a minute of carping and moaning, ending with ...] a place where innocent human beings get their heads bashed in for no reason at all!
Hollywood Acid: used by the Thousand Arms Buddha statue to horrifying effects. Kind of justified, since that corrosive substance might not be form Earth at all.
Hollywood Tactics: And how! In many instances, the Gantz team display an odd kind of Mook Chivalry, refusing to gang up on a single powerful alien. Very early in the manga, in the Buddha Temple Mission, a character suggested the sniping tactic, and applied it effectively, yet that tactic was forgotten until the Osaka arc ; although to be fair, everyone except Kurono died in that arc, so he was probably too traumatized to remember it. Nevertheless, the team never think of distracting the aliens from multiple directions with cover fire. Also, Kato never thinks of firing a kill shot after successfully trapping an alien with the gun that fires cables. He just kind of stands there waiting for the thing to break free. And let's not start on how many Gantzers gladly walk within striking distance of the aliens instead of just shooting them.
You remember the Oni Monster Arc? The one that Evolved? Yeah, they sniped him, all of them.
They also have a habit of entirely encircling aliens at close range before shooting at them, which is a terrible idea since it not only puts them all in reach of enemy attacks, but also raises the risk of friendly fire.
Also, they have invisibility cloaks, but almost nobody but Nishi ever thinks to use them. Worse, the few times they do get used, it's heavily emphasized how overwhelmingly effective an invisible attack is. They don't even think to use their cloaks against an enemy that can explicitly only be killed by surprise attacks!
Hopeless Suitor: Kurono to Kishimoto in the beginning and Reika to Kurono later on.
Humans Are the Real Monsters: The aliens all seem to be minding their own business when the characters come tearing through in a storm of mass-genocide. Even a few of the aliens themselves point this out from time to time; The final Buddha boss even eats a Gantzer's brain in order to ask Katou why they've been tearing up their shit. Most of the Osaka team embodies this trope.
The giants are basically 4-eyed, supersized humans who like to have earthlings as snacks.
Also a case of Not So Different one of them has a typical human teenager discussion with her mother.
There's an entire episode devoted to monologues on humans being bastards.
Idiot Ball: Whenever someone is in a life-risking battle with civilians, it is the law that someone who is both significant and useless must stand in the way of the enemy. Tae, Izumi's girlfriend, we're looking at you.
It's also a law that Gantz teams must at all times demonstrate they have no grasp of tactics. "Hey, everyone, we have long range weapons and most of our enemies are melee only! Let's form a circle around him at close quarters and stand around for five minutes thinking things over before shooting at the guy in the middle with our teammates right behind him with our delayed effect guns!" Somehow they nearly always manage to avoid what should be the natural consequences of this. The one time somebody decides that sniping from cover might be useful, they face the one enemy in pretty much the entire series that has an effective (fast, accurate, deadly) long-range weapon, and of course since it didn't work out so well that time, it must be a horrible idea that should never be revisited again, even when they're back to facing melee-only enemies.
Informed Ability: Nishi may very well qualify as this. He has been Gantzing for a year longer than Kurono & co., but dies shortly after the beginning of the story without getting much of a chance to show that he's a skilled player. Even once he's later brought back, Nishi gets his ass handed to him by the Nurarihyon alien and loses an arm before being teleported back. It's tough to say whether or not he really deserves the title of 'Gantz veteran' when most of his scenes have been devoted to showing him getting curbstomped.
It should be noted that Nishi apparently spent lots of his time hiding and kill-stealing when his prey was distracted by other Gantzers, and hardly ever fought on his own, hence the crappy fighting skill. Besides, he has been Gantzing for one year, yet has not been freed, has no special weapon whatsoever, and reviving someone else really is not his style, so one can be almost 100% sure he has never accumulated 100 points. On the other hands, the new players (Reika and such) get 100 points in just over a month. Thus, it is probably safe to assume that the aliens he has been fighting on his first year are pretty wimpy and not worth much points or he just hid when the aliens were too much for him, choosing to get his points wiped rather than risking his life, so obviously he gets his ass kicked a lot when faced with increasingly dangerous opponents.
Reika is the team's highest scorer, bar none (Izumi with his two wins being long dead...and having taken longer). Kaze and Sakata are rather superhuman even before death and the Gantz. And Gramps is the leader's wingman, getting lots of support help and advice..."Normal" new players all die right away, or at best score like Inaba (beaten by a toddler and a panda both).
To be fair though, he earned 100 points in the short Italy arc where ""Kurono"" of all people didn't score a single point, so he can't be completely useless. Besides, it's been fairly well established that the Nurarihyon is just about the hardest individual enemy the hunters have ever faced, given that it single-handedly wiped out the entire elite portion of the Osaka team along with putting the majority of the Tokyo team out of commission by the time of its demise. Getting your ass kicked by a 100-point monster isn't all that much to be ashamed of.
Wrong and Wronger. Nishi topped off from 75 existing Osaka stealth points kill-poached and cherry picked in that chaos... Reika was the one who got the full hundred in one. Kurono seemingly scored a lot, either 90 something or maybe a full hundred, unknown due to counter failure from glitchy Gantz.
The "Morning Sun" song played in some of the grimmer moments of the anime fits this trope perfectly.
In the anime when Kurono finds himself in the aliens' position. He has his fair share in the manga too, when he chose Tae over Reika, yet is now with Reika and Tae because of Reika having Gantz create a duplicate of him.
And Inaba, who appears to be the luckiest bastard in the universe (well, save the fact he was killed by Izumi and became a player in the first place) and has ridiculously high survival 'skills'. Once he abandons his Dirty Coward traits, finds his resolve, fights like a man for the first time and kills several powerful aliens, then appears in front of his team, victorious and looking Badass... Yes, he gets immediately killed.
Jerk Ass: Kurono is an asshole in the early parts of the story, but gets better thanks to his girlfriend Tae and excellent Character Development. Nishi and Izumi also apply, especially after the latter gets back into Gantz.
Jerkass Has a Point: Near the end, Nishi acts like everyone is insane when they decide to use the teleportation ability of the Gantz spheres to rescue captured humans on the enemy mothership rather than immediately striking its weak point to destroy it. He's right, and humanity almost loses because of the delay.
Kill 'em All: To start off, most of the cast die at least once, then most of the major characters die again. And when you think it was bad in the Osaka arc, the Italy arc starts. And then we have The End of the World as We Know It.
With the exception of Kei and Tae, the space tower collapses as it leaves Earth in Chapter 366, killing all of the giant aliens, Nishi and presumably the rest of the Gantz teams.
Lack of Empathy: Nishi, oh so much. Usually yelling at Gantz to score already, while the rest of the players're praying for someone, whose fate is unknown, to be alive and transferred safely. He bests himself when he coldly asks Gantz to give him a new weapon instead of reviving Suzuki and then calmly leaving the room full of his crying teammates.
Lazy Backup: Characters will gladly just stand around, either tossing out exposition and/or philosophical nonsense, or just outright doing NOTHING while other characters are fighting and dying. This is one of the big reasons Nishi dies.
According to the Licensed Game, he is gay. His ending involves him developing a crush on Kurono.
Game endings not cannon. And his and his stalker's endings suggest he was at least bisexual to some extent. Anyway, he died kissing a girl...not mumbling "Kei-chan" while clearly not referring to the Kishimoto one.
Most Writers Are Male: Most, if not all the young women in the Gantz universe exist to fall in love and have sex with the male characters, or throw themselves in harm's way to save their loved ones.
There's plenty of guys willing to go to extremes for girls and others in an entirely non-sexual way, though... Virgin-kun? Lolicon-san? The two well-meaning SDF guys trying to save civillians on the ship? That's just the ones who helped the protagonists' girls... What about the "Stealth Hope" teams? Nah, the "sex and death" stuff just recurrs because they're major themes in the work in general. Now Katou - but only Katou - does tend to get girls killed far too often, but that's just Katou, his well-intentioned but hesitant style tends to get people killed when they follow him. Regardless of gender.
The Obi-Wan: Several. Nishi subverts it, displaying open hostility to the team and only divulging information when pressed. Kato is one to Kurono, changing him from a Jerk Ass to Messianic Archetype. Kato gets a Story ArcIn The Limelight when Kurono revives him later on. Inverted at first with Sakurai and Sakata in that Sakata survives while Sakurai dies, but played straight when Sakata revives Sakurai and pulls a Heroic Sacrifice.
Power Armor: The Gantz suits fit this trope, as they endow incredible strength and durability to the wearer, though they can wear out if they take too much punishment. There is another Gantz armor, as seen in Osaka and Italy, which should be superior to the regular suits, but all the users seen are dead.
Reluctant Warrior: Several of the Gantz team members (most of whom didn't exactly volunteer) aren't initially real gung-ho about the idea of hunting and killing aliens, but nearly all of the ones that survive eventually get over this. Kato is probably the purest example of the trope, since while he does eventually get accustomed to his teammates' use of lethal force to the point where it doesn't make him suffer a Heroic Blue Screen of Death and break down crying every time, he still personally tends to almost always at least try to use the capture/teleport gun whenever possible as opposed to one of the "ludicrous gibs" type, and risking himself to save others is one of his defining character traits. He does give a bully a pretty savage beatdown (chapter 27 of the manga, episode 7 of the anime), but this seems to be mainly to teach the bullies that he's capable of doing so and that if they keep picking on the weaker kids he'll come after them.
Running Gag: Before he stopped being a Jerk Ass, Kurono would always be teleported into the Gantz room in compromising positions.
Save Point: The apartment, in a sense. Participants are "saved" there at their unhurt state, and retain full memory of what they experienced, as long as they are not dead when on a mission
Serial Killer: Nishi could have become one if it wasn't for Gantz' interference, based on his behavior and his classmates' comments before he kills them.
Also Hajime Muroto and Kajiura Ryuji.
Izumi deserves a special mention here folks; after all he did massacred dozens upon dozens of people in cold blood (including several now main characters). His reason for doing this? So he could rejoin the Tokyo Gantz team and murder himself some aliens while keeping some meat shields handy just in case. This comes back to bite him on the arse later.
Ship Tease: In the anime' after leaving Kurono's home when the two have a falling out, Kishimoto seemingly returns, as she has nowhere else to go, a fact that deeply upsets her. She begins crying into Kurono's chest and...the next scene shows them having sex. However, it is then revealed this was all part of a dream Kurono had and it ends when they climax. In the manga, it was made clear from the get go that Kurono was merely dreaming about her, but in the anime' the scene is only revealed to have been a dream afterwards.
And as of chapter 326, we have an alien who looks uncannily like Danny Trejo.
During the alien invasion, a man and a woman are lying on the ground. The woman is freaking out (understandably so) and the man kisses her to get her to calm down, AND IT WORKS. The exact same thing happened during the 2011 London riots, except in Gantz, the man is shot and then explodes into chunky salsa, which makes the woman freak out again.
Tae being killed by Izumi from behind with a katana may look familiar.
Chapter 339 has some people in a cage singing "We Are", from One Piece.
Talking Is a Free Action: Holy cow. The enemies will gladly stand around for seemingly minutes at a time while a character debates the ethics of killing, their chances against said enemy, or how they feel about the situation. Somewhat averted later in the manga, however, as the aliens can and DO kill characters in mid-sentence...
In the anime, the scene with the thousand arm alien has Kishimoto see the acid heading for Kato, realize instantly what it must be despite having never seen it before, have a brief conversation with Kurono, charge across the room, interpose herself in front of Kato, kneel down, and still have time for an internal monologue about how she's never been happy except when she's with Kato, and how she's sorry for Kurono but Kato really is more important to her, and how she hopes Kurono will help Kato and protect him, before the acid finally hits.
Teleporter Accident: Sometimes it happens that the very slow teleporting process creates a clone of a person. In the anime, one of the girls gets doubled this way, with the original unaware what her clone has to suffer. In the manga, the protagonist gets cloned, and each clone then starts dating a different girl.
Teleporters and Transporters: The Gantz sphere uses a very slow teleportation process on the team members; it gradually sends their bodies in and out of the apartment, starting at the head and moving downward. The characters' innards are visible while this happens. This is played for grossout horror, and occasionally comedy (Kurono is astonished that while his lower half is in the apartment, his upper half is already outside).
Teleport Gun: One of the Gantz weapons is a "Y-Gun" that traps its victims with a net, then teleports them (using the process described above) to an as yet unknown location.
Too Dumb to Live: When you have just died and find yourself in a locked room where other people teleport in, explain your situation and tell you to put on that body armour or die a horrible second death, listen to them instead of writing them off as cosplayers. Your survival won't be guaranteed, but at least you'll last more then 5 seconds.
The guns blow things up...after a few seconds. So instead of whining about how you can't beat an alien of the story shoot it already!
In recent chapters, students in Kurono's class all casually go their own separate ways instead of listening to their teacher, who suggests that they should all stick with the one person (Kurono) who just successfully fought off two aliens right in the middle of an invasion.
And even the ones that do follow Kurono proceed to laugh about his otaku outfit and question why they are following the one kid who just smashed two aliens into blood pancakes. Secretly, Kurono was attending Too Dumb To Live University all this time, and was a daytime lantern there because he actually had any will to live at all.
The "innocent bystanders" in general, whose reaction to aliens wrecking havoc begins with "Cool, let's go there and check it out" (when they see them on the news), then "Cool, let's come closer and take pictures" (when they see it from far away), then "OMG it's horrible, let's just stand here while it kills us", then "OMG someone's fighting, let's stick around and watch". Not to mention the zero common sense (walking home naked, in a war zone, while you don't know what the hell is going on is dumb, folks), and zero respect they have for the heroes. One can almost sympathize with Nishi who just wants to save himself instead of saving the civilians.
That's not even the worst of it. You'd think that after the massive, widely televised and reported incident with Oni's in Ikebukuro where EVERYONE could see the hunters and the aliens, that people would at least have an inkling about what to do when monsters show up. Instead, they act exactly the same things in EVERY arc until Katastrophe, assuring themselves that it's all "CG" or a film shooting. It gets worse when you realize half the time that they'll stay right where they are EVEN WITH THE EVISCERATED REMAINS OF THEIR FRIENDS LYING IN FRONT OF THEM.
Taken Up to Several Billion: with the latter portion of the Katastrophe arc. Despite witnessing the deaths of something like half the human race over the course of two days, suddenly all the civilians are willing to crawl out of their holes and embark on the alien spaceship that-and I cannot stress this enough-JUST MURDERED ALMOST EVERYONE THEY KNEW, because of an incredibly obviously false peace treaty, and start treating the hunters-y'know, the guys who they've seen fighting monsters and saving lives-like cockroaches.
Advancing Wall of Doom: sort of. The invisible boundary for the mission zone closes in towards the target as time runs low, though it does not seem to have any noticeable effects on the mission.
Alien Invasion: The plotline of the last third of the overall story and arguably the whole manga from a certain perspective.
Aloof Big Brother: Akira thinks of Kei's attitude like that, despite having very little respect for him. Also, he's himself sort of Kei's aloof younger brother.
Anguished Declaration of Love: Anzu does this after Kato volunteers to be the bait to lure the Nura alien into a trap. Also, Kishimoto does this when she takes a blow and dies for Kato.
Anti-Climax: His Humongous Mecha is mentioned below, but Oka himself turns out to be this. After being hyped up as a trump card for the entire mission, the man who cleared 7 games goes 3 rounds with the final boss, then gives up and runs away only to be killed offscreen later.
Body Horror: As if there weren't enough horrible ways be killed, eaten and mutilated as a human, in Chapter 347 this takes a more horrible turn when some of the alien lifeforms inhabiting the giants' space-cities are apparently able to release glowing mutagenic spores that turn whoever they touch into a mutating, murderous, monstrous version of themselves with heads, arms, legs and other general appendages and viscera everywhere and nowhere they should be. Interestingly enough this effect seems to apply to nonorganic material as well, as one of the Gantzers affected by it sprouted extra guns, Gantz suit bits and glasses.
Brick Joke: After Gantz declares Sakurai "No longer a Cherry", we see Kurono get a message on his phone from Sakurai - whose email address ends in 'cherry.jp'.
Cassandra Truth: The creator of Gantz actually reveals the entire truth to reporters who get too close since he knows no one will believe them anyway.
The Cavalry: In chapter 311, the suited aliens have Clone Kurono trapped with no possibility of escape, guns pointed at him at point blank range - when suddenly the whole pack of aliens are wiped out in one attack, and a cloaked Gantz team reveals itself.
Chivalrous Pervert: Subverted in a recent Tear Jerker moment. With Tae abducted along with countless other humans, she's pulled from the water (that was drawing them all off to death) by a middle-aged man. When asked why he chose her specifically, he said it was because he's a lolicon. The subversion comes when he reveals that he saved Tae because she resembles his recently-killed daughter.
Earn Your Happy Ending: After all the horror and trauma they endured, Kurono and Kato are able to survive and finally make it back to their loved ones. And it is implied that many, if not all of the characters who died as a result of Gantz are brought back to life... even though, the series still has a case of Four Lines, All Waiting.
Fan Disservice: And it was hidden as Fanservice, to boot. It turns out that the Reika in a sex scene is actually a shapeshifted alien. A male shapeshifted alien.
Faux Action Girl: Anzu. We never learn if she'd "cleared" the game before, but she appears to be an experienced player who knows how to act on the battlefield and is eager to make fun of Katou's naïvete. Then she takes an action. And she messes it up, gets rescued by said Katou, is reduced to his Satellite Love Interest and finally dies for him. Not that the rest of her team did significantly better, but still...she finally does something after being revived by the Osaka nerd before the Katastrophe in chapter 346 by shooting and destroying an alien fish lizard monster thing as it begins to savage a bunch of people they'd just saved from the giants. This then backfires in 347 when Anzu and the nerd destroy another alien; releasing light spores which cause people to mutate into horrid abominations made of their own body parts (you grow extra heads, arms, legs of all different sizes out of your original skull). It also got worse.
The Osaka arc presented an entire army of foul beasts/aliens as well as three immensely powerful boss monsters, one of whom was so strong it wiped out a more experienced, better armed, and brutal Gantz team almost single-handedly, as well as displaying a regeneration ability Wolverine would envy. The main team barely survives...and then finds out that Gantz has a clock that is counting down some sort of worldwide catastrophe which is due in about a week. And just when you think things can't get any worse, the Italy arc starts, and there isn't a sewer big enough to produce all the excrement that has hit the fan.
Then Chapter 303 came out. Somehow, it's gotten EVEN DAMN WORSE. Specifically, alien robots with the same visual theming of the Gantz sphere and weapons land worldwide, and begin to level everything. Aliens with the same large Gantz suits seen in the Osaka arc then appear in everywhere and start to do the same, harvesting the civilians. And in Chapter 306 the alien mothership starts coming down... All humanity need is a final blow.
Just when you think it couldn't get any worse than that, Chapter 342 came out. After rescuing Takeshi from the explosions, Nishi finds Gantz on the street, impaled through the head. Oh, and Kaze's group is trying to get Gantz to get them back as Giants close in on them. To put it bluntly... IT! GETS! WORSE!
And now we learn that the Giants are recreationally fishing humans, complete with bait and rod guns. The fact that Tae is caught in the middle of the group being fished makes the situation worser than ever for Kei.
Not only is Kei-1 in a bad situation; in chapter 345, Kei-2's group of merry men have been transported to an unknown region of the alien mothership described as "hell" in the previous chapter, where they've found a mass grave featuring hundreds of humans, including JSDF members and people from other Gantz teams. To top it all off, the civilians they just rescued showed the standard Gantz-esque display of immediately showing zero appreciation and leaving the team only to encounter another group of aliens which can only be described as large creepy crawlies.
And by chapter 370, Body Horror gives way to existential horror as everyone is being literally lectured by a giant space head on the most merciless version of materialism.
Just to prove that humans aren't anything special. Giant head resurrects several of the main cast...and then promptly kills them.
And then, just as everything seems to be over...everyone figures out the Gantz balls are inoperable and are now stranded on a space ship without anyway to get back to Earth. The end of the chapter is literally tagged, "The end of despair becomes the end of hope."
Then the plot starts flip-flopping at this point. Turns out just one is still active, and literally everyone on the ship rushes to get to it, resulting in a very lengthy line to teleport people out. Meanwhile, the Americans decide to arrange one-on-one fights with the special forces giants to the death to kill time... Right up until one of said giants turns out to be a badass war hero that curbstomps the entire American team, and then demands Kei Kurono, the murderer of his brother, to show himself so they can fight, otherwise crash the mothership into the Earth, basically killing off all of humanity. Everyone on Earth promptly loses their shit (including mass suicides), before Kei steps up to the plate, resulting in one final showdown. Kei nearly wins, only for the giant to manage to get the upper hand and nearly steps on him, only for Kei's teammates to step in and pull his ass out of the fire to join the fight. The author loves building up the suspense to ridiculous levels, it seems.
Funny Background Event: before the Buddha Alien mission begins, you can spot the dog harassing Sadako in the back.
Gentle Giant: Daizemon "Muscle Rider" Kaze, towards Takeshi.
Gut Punch: Kurono getting killed off at the end of Phase I was upsetting.
He Who Fights Monsters: Many Osaka Gantz members are just as bad, if not worse, then the aliens they fight against. In fact, a big story point during the mission involves Kato making the conscious decision to help bystanders instead of ensuring his own survival.
Invoked in a rare positive light during chapter 352. One of the hunters outright states, "I wouldn't count us out just yet. We may be fighting monsters, but our squad has a few monsters of its own." Cue several images of the team going Berserker pack on the previously nigh-unstoppable abominations.
I Want My Beloved to Be Happy: Reika uses her 100 points to resurrect Kurono's girlfriend...and then later subverts the trope by resurrecting another Kurono for herself.
I'm a Humanitarian: The giants have their own agriculture and animal husbandry, but they harvest humans and eat them as snacks because of their culture. They apparently know that humans has a civilization, but don't care.
Katanas Are Just Better: The vampires are capable of creating/pulling from the hand various human weapons, but when a serious fight kicks in, katana seem to be the only effective one. High tech katanas is also part of the Gantz arsenal, and they remain useful even in the most recent chapters, when they can cut through aliens that guns cannot harm.
Kick the Son of a Bitch: Along with a fairly hefty dose of Laser-Guided Karma. A good amount of the people who wind up in Gantz's room are either rapists, murderers or both. Most of those guys end up being eviscerated within chapters, if not pages of their introduction.
Lampshade Hanging: The author introduces a whole heap of coward characters, and then writes something like "Those who don't want to fight are useless".
Laser-Guided Karma: The life expectancy (read: chances of not being torn in half by a T-Rex) of Jerkass characters is significantly lower than that of decent ones. Somewhat justified, considering it's not that good characters are inherently stronger or better at surviving but rather the fact that they tend to work together much better and are also more likely to be revived.
Love Makes You Crazy: It seems like Reika is starting to head down this road after being rejected by Kurono. She resurrected a second copy of him after getting 100 points in Italy.
She feels guilty about it imediately afterwards though and when the Alien Invasion begins she seems more eager than usual to sacrifice her life in the defence of other as some sort of atonement
Manly Tears: Daizemon Kaze after finding out Takeshi's 'stepfather' beat him to death over a pudding cup, while his mother did nothing to stop it.
Say My Name: Oh boy, this trope has really become frequent in the Katastrophe arc. The TAE-CHAAAAN! and KEI-CHAAAAAN! cries these days are as fundamental to Gantz as Ludicrous Gibs and wanton nudity.
It seems that the author recognizes this and makes fun of it as well. In a recent chapter, Kurono and Tae are using these cries as a call and response when an alien girl decides to keep Tae as a pet. The alien gets annoyed and puts her thumb on Tae's mouth to shut her pet human up.
Shock and Awe: The Lightning Oni who is the boss of the Oni mission. Also, some of the giants, due to these weird watch/wrist band things.
Spin-Off: One each for the Osaka team and for Nishi.
Stripperiffic: The Gantz suits consist of several sections of material held together by the straps with the silver sockets. The still art at the end of each chapter likes to take advantage of their design.
Suicide by Cop: Done by Izumi who commits the worst mass homicide in history, so that he can be killed and sent to Gantz.
Team Spirit: The entire point of the Nura mission. The Gantz team clear and survive the mission by working as a team while nearly everyone on the Osaka team ends up dying because they think it's everyone for themselves.
Wham Episode: Chapter 369. It reveals that the aliens the Gantz teams were fighting against all this time were immigrants from a dying Solar System and that the Room of Truth broadcasted the technology capable of defeating the aliens. Add the fact that the humans themselves turned the concept of fighting the aliens into a game, and you suddenly realize that this whole series is The War of Earthly Aggression on Earth.
Wham Line: During the Katastrophe arc: "Gantz can't bring people back to life anymore. It can't heal injuries either, nothing like that."
Chekhov's Gunman: The filler arc does this with several background characters, including the hobo killers, Kurono's teacher, the owner of the bookstore frequented by Kishimoto and a gang member who knew the biker that used the Gantz-gun in public.
Improvised Weapon: When the hobo killers get sent to the room and target an unarmed Kurono, he responds in kind with a soaking wet rope of knotted clothes. Add muscular agumentation for an instant Epic Flail.
Mrs. Robinson: Sei Sakuraoka with Kurono. Between the manga and anime, he states that he is 15 and in 10th grade. She is at LEAST 18, and could be as many as 10-15 years older than him. In the anime (depending on which version you listen to) when talking to him, she refers to herself as "big sister" (Japanese audio) and later questions a potential relationship between the two of them because of "the age thing." (American audio). None of this stops them from having sex, twice.
No Celebrities Were Harmed: The "Tanaka seijin" joke is lost as he's renamed to "Suzuki seijin". And thanks to an Art Shift, Sei Sakuraoka's resemblance to Lara Croft is also lost.
Wall Bang Her: Kurono and Sei have sex like this at the end of episode 15 and begining of episode 16.
You Gotta Have Blue Hair: Nearly averted-Most characters either have brown, blond, or black hair but Kishimoto's red and the younger hobo murderer's blue hair fall squarely into this trope. Sei Sakuraoka's dark blue may also count, but it may be supposed to be black. Joichiro Nishi's hair also happens to be green.
Katanas Are Just Better: To the extent that the final battle of Perfect Answer relies almost entirely on these, both the Gantz-issued ones and the vampire-summoned ones used by Vampire!Kato.
Pragmatic Adaptation: Many of the one-time only Gantzers don't appear at all, Tae shows up early, and perhaps most importantly, all the hunts go much differently than their anime or manga equivalents. For example- rather than wander around in only Kato's jacket, Kishimoto is the only person wearing a Gantz suit in the Green Onion alien hunt.
Reset Button Ending: Crossed with allusions to Messianic finale. Kurono finishes Gantz' mission and is awarded full points, giving him the power to undo everything bad while all of the good guys manage to retain their character development. The catch, Kurono must sacrifice his own future and be imprisoned forever.
Licensed Game: A PS2 game based on the manga exists. It's half Dating Sim and half action game. It ends after the chibi alien mission, right before Izumi appears.
Tsundere: Nishi in the Gantz PS2 game if you follow his route. He even says something along the lines of "Don't get the wrong idea; I didn't come here to help you" during one event. This is mind-meltingly weird for anyone who's familiar with the Jerkass Nishi from the manga and anime, to say the least.