History Manga / Blattodea

* AbortedArc: ''Arachnid'' ended with Kabutomushi and Gokiburi looking to invade the Organization's headquarters in search of Alice, with Kabutomushi being noted to have a sense of duty over it. Then there is a year-long TimeSkip that brushes all of it aside. Gokiburi ended up working for the Organization again as a prison director but failed to find Alice despite her surveillance drones and is left in the dark about the whole "make Alice the Boss" thing. As for Kabutomushi, she's just hanging out at an abandoned [=WcDonald's=].

* AsYouKnow: Kabutomushi explains to Alice (and the readers) that the zombie outbreak was planned by the Organization so they can throw Japan into chaos and get away with murdering countless people. This retroactively makes a comment from Gokiburi in the final chapter of ''Arachnid'' rather awkward, as she explains the exact same thing to Alice and the readers 28 days into the outbreak.

** Hibarigaoka prison is made into a shelter from the zombie outbreak outside and Imomushi guides Chiyuri and Dinoponera to it, but she makes vague ominous remarks about not wanting to be there and for Chiyuri and Dinopo to survive no matter what. The place's director is Gokiburi of all people, who claims it's like Heaven in there but immediately starts bullying both of them before they even reach the main gate and has the two arrested as common prisoners for forced labor. It's also said by Bekkōbachi that the prison is actually intended to hold rebels from within the Organization under captivity, and later Kabutomushi openly dissuades Alice from visiting it even though Gokiburi, for all her faults, is an ally to her.

** Setsuna's addiction to attempting to stab people InTheBack, failing and just continuing to do it while expecting different results is taken to the extreme that at one point she tries hitting Sasori in a panic without noticing that she's been disarmed.

** Clearly Alice and Setsuna both stamp their bare foot on somebody's face in back-to-back chapters for no particular reason at all. [[spoiler:...It works as an allusion to "formicophilia".]]

** Sasori saves Setsuna from Rin and takes an interest on becoming a teacher figure to her like how Kumo was to Alice, which kind of... sort of... vaguely makes up for the whole "gang-raped a million times by dozens of zombies" thing...

* RapeDiscretionShot: Subverted and averted in some instances, suggesting any censorship rules at Gangan JOKER that required Murata to use this trope back in ''Arachnid'' aren't quite in place anymore.

* UncertainDoom: After Setsuna is captured by Sasori, there is a jarring TimeSkip to a conspicously unconcerned Chiyuri meeting Alice three months later while looking like she became part of the prison's staff. After some chapters, the story starts showing how Sasori had been looking after Setsuna in the interim...

* VillainsOutShopping: A few hours before killing a clueless teacher and beating up a lot of people in the Arachnid Hunt, Dinoponera was innocently bathing on a park's fountain until Chiyuri stopped her.

* WakingUpElsewhere: After being sedated and captured by Sasori, Setsuna wakes up in a basement with Sasori nearby declaring she will only get out if she becomes strong enough to defeat her. This mirrors Kumo training Alice back in the beginning of ''Arachnid''.

* UncertainDoom: After Setsuna is captured by Sasori, there is a jarring TimeSkip to a conspicously unconcerned Chiyuri meeting Alice three months later while looking like she became part of the prison's staff. For multiple chapters, Setsuna's status is left unknown.

* VillainousRescue: Sasori keeps Rin from killing Setsuna by putting the latter to sleep. She most likely has no good intentions whatsoever for the poor ambulant rape virus cure, though...

** Used in a non-lethal sense comparable to PantyFighter series like ''Anime/AgentAika'' or ''VideoGame/SenranKagura''. There's a fixation on Setsuna, who has been violated on-panel while zombified with a dead stare on her face, being repeatedly and specifically knocked out while nude and with increasingly exploitative views of her defenseless body.

* FaceFramedInShadow: When Kagimushi introduces the oddball assassins Chiyuri will face later, all of them have their faces slighty shadowed to give even the little Sun Spider and the droopy-eyed Ladybug a sinister appearance.

* DropDeadGorgeous: Used in a non-lethal sense comparable to PantyFighter series like ''Anime/AgentAika'' or ''VideoGame/SenranKagura''. There's a fixation on Setsuna, who has been violated on-panel while zombified with a dead stare on her face, being repeatedly and specifically knocked out while nude and with increasingly exploitative views of her defenseless body.

** ClothingDamage and panty shots are used to express how vulnerable Setsuna is from scene to scene. She used to be threatening and untouchable in ''Arachnid'', so readers [[MagicSkirt couldn't get a look at her panties]] no matter how scenes framed her. As ''Caterpillar'' retconned Imomushi's positive opinion of Setsuna to make her seem weak, the redrawn scenes then did feature panty shots of the ant-girl. Following Setsuna's humiliation and gang-rape, it is immediately pointed out how her panties got ripped off and she starts to get portrayed as very frail and ineffective, with way more outright nude shots of her than readers could know what to do with. Setsuna still hangs on to her damaged middle school sailor uniform for a whole year until it is sliced to pieces and she's left at Sasori's mercy, with the nurse remarking Setsuna hasn't grown at all since they last met.

** Hakiriari is one of very few antagonists who has the common sense to order her comrades to gang up on the protagonist, in this case Chiyuri, with her. This gets Hibiki to back Chiyuri up for fairness' sake despite him disliking her, with Chiyuri pointing out that in ''"Sailor-Force"'' the entire team fought together against even a single villain. However, '''even then''' none of those knuckleheads get to fight because Shoichiro interrupts them and knocks Chiyuri out by himself.

* TeamSpirit: Chiyuri and Setsuna learn to get along as they survive the outbreak, with Setsuna stunning zombies by stabbing their heads so Chiyuri can then behead them with a baseball bat strike. This is notable because teamwork remains practically inexistent throughout the series -- other than loose examples such as Megumi baiting Kirigirisu into Alice's traps and Hibiki tricking Riokku into launching him towards Setsuna, the story so far has been exclusively about one-on-one fighting.

** After Chiyuri confronts Shoichiro in chapter 32, the next chapter cuts to Alice's side and she finally comes across Chiyuri upon arriving on the prison. Chapter 34 then reveals there was a time displacement between their scenes the whole time -- 3 months have passed since Chiyuri first entered the prison. The narrative then moves back to the conflict between her, Shoichiro and his henchmen.

** Alice is depicted with green eyes on the cover for Gangan Joker issue the story debuted on, when they're normally greyish-yellow.

* InstantSedation: While Setsuna was shocked from being stripped and nearly slashed to death by Rin, Sasori was stinging her right on the butt with sleep-inducing toxin at the same time. The sedation kicks in just a while later, while Setsuna was attempting to stab Sasori from behind.

* BackToCameraPose: Whenever somebody mentions Alice, the dreaded natural-born killer with wires and a knifegun, she is framed in an ImagineSpot looking ominous with her back turned to the reader. Sometimes she'll even be staring back with GlowingEyesOfDoom. This also applies to various other characters, to the point it [[RunningGag gets repetitive]] if two or three end up on this pose in a single chapter.

** One chapter opens with Setsuna comically crawling on the ground while begging Chiyuri for something, like she's zombiefied again. It turns out she just wants candy, with the implication that Chiyuri beat her to the ground to deny her some of it. Despite the lighthearted tone of the scene, it also reads as disturbing because it explicitly mirrors Alice amputating the limbs of the zombie girl covered in roaches in the prologue, as if implying Alice will eventually cripple or murder Setsuna too.

** When Imomushi [[AngerBornOfWorry argues with]] Hanakamakiri about him leaving her behind in the previous year without even spending a night together like they promised, she says he can't complain if she later rapes him. He answers it's not rape if it's consensual, since he loves her too, and gets her to calm down. The whole time, Alice is a few steps away thinking a fight could break out any second and comically reacting to everything they say.

* {{Anticlimax}}: ''Arachnid'' ended with Kabutomushi and Gokiburi looking to invade the Organization's headquarters in search of Alice, with Kabutomushi being noted to have a sense of duty over it. A year later, Gokiburi ended up working for the Organization again as a prison director but failed to find Alice despite her surveillance drones and is left in the dark about the whole "make Alice the Boss" thing. As for Kabutomushi, she's just hanging out at an abandoned [=WcDonald's=]. Some SequelHook payoff this is...

** Hanakamakiri wants to force Alice to become the Organization's Boss and mantain the status quo out of paranoia that somebody might put a hit on Imomushi again if anything goes wrong, which Imomushi herself in the ending of ''Caterpillar'' already considered an unnecessary concern.

* CoversAlwaysLie: Volume 1 has Alice on the cover, but while she is still very important "blattodea" stands for roaches and Chiyuri is soon introduced as the actual protagonist.

* TimeSkip: After chapter 7 is done establishing Chiyuri's and Setsuna's characters and motivations, chapter 8 moves the story to 58 weeks into the apocalypse, just after the point Alice is declared the new Organization boss by Hanakamakiri.

** ''Caterpillar'' protagonist Imomushi starts up trouble with Chiyuri, who she mistook for a zombie, and Setsuna by dropkicking the first and threatening the latter before trying to cripple her when she retaliates. When Chiyuri tries to hold Imomushi down, she stubbornly escalates the fight until Chiyuri nearly kills her with a Wave Cannon. Afterwards, after escaping from a crowd of zombies, the three calm down and suddenly turn friendly towards each other.

** Gokiburi was a main character in ''Arachnid'' with a supporting role in ''Caterpillar''. Instead of helping Chiyuri find Alice and solve the outbreak, she is highly hostile for no reason other than being her usual bossy-bitch-to-anyone-not-named-Alice self and takes Geji along to harass her and Dinoponera near the gates of Hibarigaoka prison. Likewise, Soichiro is supposed to be the TokenGoodTeammate in there, and yet his reasoning is that if two 16 to 17 years-old dumbos show up in the prison and refuse to be subjugated by his henchmen, then they are American spies and must be annihilated.

* WisdomFromTheGutter: Chiyuri and Yamato are portrayed as wise, humble and kind-hearted [[{{Hobos}} homeless]] [[MagicalHomelessPerson people]], contrasting with the villains who are all Social Darwinists looking to steal assets from the weak. Despite an intention to portray the homeless in a humanizing way, other hobos seen in the story are all male, comically ugly and, if they aren't just minding their own business, are prone to attempting to assault any woman in their sights like all the other villains.

** The bug trivia about ''Dinoponera'' ants portrays what looks more like a ''Paraponera clavata'' instead by mistake (which never happened in previous chapters), and as usual Setsuna acts like a mix of both. Setsuna's and her adoptive father's ants are popularly lumped together as "bullet ants", but in reality belong to different subfamilies, and ''Dinoponera'' is instead closely related to ''Pachycondyla'' -- which Setsuna is only vaguely themed after by how the "巨針蟻" [[AlternateCharacterReading furigana]] given with her name refers to ''Pachycondyla chinensis''. Also, the narration scenes love describing ''Dinoponera'' ants as being way more agressive than studies report them to be and pretends they have a major grudge against ''Paraponera'' ants. The series, as well as [[https://www.youtube.com/results?search_query=ディノポネラ other Japanese media]], also love conflating ''Dinoponera'' with species that have Army Ant syndrome despite that being a whole different kind of behavior.

* WisdomFromTheGutter: Chiyuri and Yamato are portrayed as wise, humble and kind-hearted [[{{Hobos}} homeless]] [[MagicalHomelessPerson people]], contrasting with the villains who are all Social Darwinists looking to steal assets from the weak.

** The problem: an outbreak of "rape-zombies". The solution: luring a foreign teenage girl into getting gangraped to turn her into an ambulant cure. Couldn't they have grabbed ''Dinoponera'' venom from Butantan Institute or something? What's even worse is that the story [[https://i.imgur.com/EDHI5cg.png flagrantly makes]] all that sound like an ''amazing'' thing.

** Several bug funfact scenes have artwork traced from research papers.

** In contrast to the cutesy females, all minor male characters are drawn far more detailed, with appearances ranging from unattractive to monstrously deformed, like they've come out of an entirely different series.

** The bug trivia about ''Dinoponera'' ants portrays what looks more like a ''Paraponera clavata'' instead by mistake (which never happened in previous chapters), and as usual Setsuna acts like a mix of both. Setsuna's and her adoptive father's ants are popularly lumped together as "bullet ants", but in reality belong to different subfamilies, and ''Dinoponera'' is instead closely related to ''Pachycondyla'' -- which Setsuna ''is'' only vaguely themed after by how the "巨針蟻" [[AlternateCharacterReading furigana]] given with her name refers to ''Pachycondyla chinensis''.

* FaceFramedInShadow: When Kagimushi introduces the oddball assassins Chiyuri will face later, all of them have their faces slighty shadowed to give even the little Sun Spider girl and the droopy-eyed Ladybug a sinister appearance.

* MoreDeadlyThanTheMale: The series in general aside from ''Manga/{{Jackals}}'' is based around bug motifs, meaning most of the cast is made out of strong and dominant females while the males are lesser and only present a threat by being rapists. The group of hitmen that Kagimushi presents to Gokiburi in particular has two men, Hebitonbo and Abu, who both get defeated in a single hit. Rin, on the other hand, almost kills Setsuna, and then the other three girls in the group all ambush Chiyuri together.

* SexyPackaging: Every cover in the series as of volume 5 is of a half naked girl, as are some of the inside covers. This makes it readily apparent how HotterAndSexier it is even compared to ''Arachnid'', which didn't use this trope as much.

** Dinoponera is severely traumatized and half-zombified, which makes her very ineffective in combat and forces Chiyuri to do all the heavy-lifting when they fight.