- An airborne strain which got mutated as it goes along,
- A visitor in Japan who contracted The Virus in transit, turned after death, and zombified everyone in the vicinity,
- A Japanese strain of The Virus that went out of control.
- Well, jossed, as Miki did manage to leave the school with everyone.
- Jossed. It's more or less implied that Miki spotted a now-zombiefied Kei among the crowd of zombies as everyone left the school.
- Confirmed in ch. 36.
- Or perhaps there'll be expies of Randall Flagg, The Kid, Lloyd, and Trashcan Man that will appear as villainous survivors that the girls need to either avoid or face down.
- As for the airborne infection, it could be a dormant strain of The Virus like in The Walking Dead, which only fully activates when the host dies, therefore, the host will turn into a zombie after death.
- Unlikely. In Fear the Walking Dead, even with said airborne/dormant-until-death theory put in place, the walkers took days to ruin everything, while this outbreak zone fell in a matter of hours. It's also very unlikely that the dormant theory is true, because of Kurumi finding a dead man who committed suicide in the School's Basement by hanging himself and didn't end up becoming a zombie.
- As of the Randall Corp. HQ chapter, we have some new evidence against this, but first we find out what's causing the infection: It's bacterial, and not only is this bacteria causing this endemic to the area that the city is in, there's records indicating previous outbreaks in the past that were swiftly dealt with. What made this current outbreak as bad is it is now was due to Randall Corp's experimentation with the bacteria, and all it took was a bit of carelessness by someone on the team responsible on the research of this bacteria to become patient zero.
- The manual in the school adds more credence to the theory. In the manga, the manual explicitly states that each safehouse has only enough supplies for fifteen people, despite the rest of the manual indicating that "many" lives can be saved by the right course of action. True, stockpiling is an inexact science, and the task of sustaining a whole school, for example, for over a month would be near-nigh impossible. Assuming that you will only have to provide for a maximum of fifteen people, however, indicates that you don't expect many survivors: there are five safehouses, not counting the Randall Corporation itself, for a total of 75 planned survivors maximum in the whole area, assuming the other four safehouses have the same amount of supplies. Why would the corporation provide such a limited amount of emergency provision in a school, where there are hundreds of children and staff? Because they were deliberately setting up conditions to minimize the number of survivors, while still ensuring that there were a few to use as lab rats. Also, by including this information in a manual, they were almost guaranteeing that infighting among survivors would thin out the numbers once the document was discovered, in the unlikely event that a larger number of people escaped — the Melee Fight Crew demonstrate as much, descending into brutality and treachery once supplies get low.
If the twist with Megu-nee was that she wasn't really there, the twist with Ruu might be that she is really there. Everyone assumed that she was a teddy bear from the second she appeared, after all. And while it's safe to assume that Yuki, Miki and Kurumi would play along with the dellusion, nobody at Saint-Isidore seems to find it strange when the girls talk to Ruu. Not even a pause or a dubious look. The author may deliberately throws innuendos that Ruu is a teddy bear, only to reveal that she isn't. (And yes, I know it's unlikely, I'm throwing this theory just because.)
- Ever since her introduction, there have been multiple wrenches thrown into this WMG. First, read the spoilered WMG that has since been confirmed that throws the wrench into this theory. Next, go back to the last page of Chapter 38 where we see Touko standing across from Yuuri and Ruu. Note that Ruu is NOT in the reflection of Touko's glasses. The third wrench thrown into the works so far would be page 16 of Chapter 42. Note how we see a stuffed bear's ear in the reflection of Touko's glasses as she turns away from Yuuri.
- Also in Chapter 42, look at the university students' expressions. Hika looks concerned and a little pitying. Aki's expression is a cross between confused and worried, and she has a small sweatdrop. Touko looks like she doesn't know what to say — or is holding herself back from saying something. They've definitely noticed that something is amiss. And you'd think that they'd have interacted with the youngest survivor if she was really there. Perhaps the only reason they let it slide was because Yuuri acts less obsessed with Ruu when she's around the university students, while it's become all she talks about with her own club. Perhaps, like Yuki, she's aware of reality on some level, and she knows that demonstrating herself to be delusional among a survivor group she doesn't know so well could be dangerous (it makes her seem more vulnerable and less trustworthy, which could be exploited). However, when faced with a potentially dangerous but productive mission, she opts out to protect "Ruu." From the university students' point of view, she just told them that she wouldn't help them in case her stuffed toy was injured — if Ruu was real, they'd probably be the first to suggest that Ruu doesn't go. It'd be a great double bluff, but real-life-Ruu looks unlikely.
- I don't think we'll ever run out of wrenches, because Chapter 43 just introduced another one. Yuki's submission into the Crew's scrapbook includes her drawings of each of School Life Club's members' faces, along with the face of the teddy bear. Yuki knows that Yuuri thinks the teddy bear is Ruu, but Yuki doesn't know what "Ruu" looks like.
- Chapter 48 puts the final nail in the coffin and confirms that "Ruu" is the teddy bear.
Pre-breakdown, Yuuri was the most dependable girl in the group...and, arguably, the one most responsible for the girls' survival (as she maintains the necessities they need to survive, and co-ordinates the activities of the other three girls). However, after her breakdown, the "reveal" of Ruu comes out of nowhere. The organised and logical Yuuri maintains that she had totally forgotten her younger sister - that Ruu was absolutely erased from her memory while she was still relatively sane, not simply a memory she couldn't afford to dwell on. That's not much of a stretch: delusions are powerful things in this series, and all of the girls are extremely reticent when talking about their families — Megumi, the one adult, is the only one with any concrete mention of her parents . Yuuri's breakdown after the crash could well have destroyed the carefully constructed coping mechanism of her selective amnesia. However, there's still something really odd about the scene in which she suddenly remembers the existence of her younger sister, panicking over how she could have forgotten. Perhaps she didn't forget: Ruu's whole existence is a delusion, acting as a Replacement Goldfish for everything and everyone that Yuuri lost to the Zombie Apocalypse, or a manifestation of Yuuri's own guilt about not being ables to save what she loved.
We all know that Miki isn't as hard-hitting with the shovel than Kurumi is, and after supposedly killing the zombie Megu-nee, the body's gone when they come back through the same area. The possibility being brought to light here is that Miki didn't hit her hard enough to put her down and instead simply stun her, so she could of gotten up and walked off. And it's known that the zombies are partially motivated and drawn by memories of their former lives, and even after full reanimation Megumi has shown subtle signs of It Can Think. So there's a possibility that she may tail the rest of the club, and considering how stamina isn't much of a problem with the zombies, be quite tenacious about it too.
It makes sense regarding their demeanour, anyway. They seem to be off their heads and more focused with whatever the hell they themselves are doing instead of interested in survivors, and their hostility seems to mostly come when their attention wavers (which doesn't take much) thanks to a survivor distracting them. It also explains why they repeatedly try to ape their former lives.
These two have gotten major death flags recently, what with Kurumi's infection appearing to have not entirely been cured and Yuuri's increasingly delusional insanity that's almost gotten her killed at least once beforehand. For the former, She will likely succumb to her infection and become a full-blown zombie, although it is entirely possible that she might get a Dying Moment of Awesome where she takes down the entire Melee Fight Crew right before her death. For the latter, As said before, her insanity has almost gotten her killed once before when she wouldn't put down "Ruu" and almost took a crossbow to the head. It's entirely possible that her refusal to leave without Ruu will get her killed by either the MFC or the zombies, or she'll attempt to get revenge on Ayaka for "Killing Ruu", which will result in her death.
Given that Red Herring is very popular trope, it is entirely possible that the author is delibritly misleading us into thinking that Kurumi and Yuuri will die, and instead A permenant or at least far more longer-lasting cure for Kurumi will be found, while Yuuri is snapped out of her delusions in one form or another. On the other hand, this could lead to a twist involving a really unexpected death that no one saw coming......
We know that she is very mentally unstable and enjoys killing other people way too much. If Takato ends up doing something she doesn't like, or if she decides that she wants to be in charge now, she will very likely kill him. Or they'll find themselves up against many zombies, and she'll injure him to use him as bait so that she can get away from the zombies.
- Partially confirmed as of Chapter 50. While he isn't dead yet, Takahito is discovered to be infected, which causes Ayaka and Shino to instantly turn against him, and Ayaka looks disturbingly happy at the prospect of killing him and being in charge of the MFC.
- As of Chapter 54, confirmed. Ayaka sends Takahito falling to his death in the "Zombie Graveyard" and then lights his corpse on fire.
Given that the Melee Fight Crew is very paranoid and have been shown killing their own members, as well as how they have a big amount of distrust and don't seem to actually care about each other, it is entirely possible that something will cause Takato, Ayaka and Shinou to all turn against each other and result in the deaths of at least 2 of them, if not the entire group.
It's very unlikely that the anime will end up getting a 2nd Season due to it's Acclaimed Flop status, so it's really up to the viewer's imagination on what happens to the anime's version of the girls after it's ending. However unlike the manga, the anime doesn't have any indication that the cure used on Kurumi isn't permenant and requires multiple doses, and Yuuri also doesn't have a massive mental breakdown that leads to her going insane and believing that Yuki's Teddy Bear is her dead little sister Ruu. Plus while we know that the University exists in the anime's continuity, the only character from the current manga arc that we know for sure exists here is Touko due to her making a cameo at the very end of the anime, so it's unknown if the Melee Fight Crew exists in the anime or not. So maybe somewhere down the line the girls either get a case of Earn Your Happy Ending or at least a relativly happy Bittersweet Ending sometime after the anime ended.
It's very easy to view Takashige of the MFC as a complete moron for still continuing to chase Kurumi even after she leaves the university and runs out into the zombie-infested streets, which get ends up getting him killed. However, it is subtly implied that he and Kougami might have been good friends, as they're seen interacting often in the flashbacks and Takashige looks quite sad when the MFC are discussing Kougami's mysterious demise. His idiotic actions could be explained as him despeatly wanting revenge on the people who might have caused the death of his friend, without thinking of the consequences of mindlessly persuing said revenge.
The possibility of Yuuri and/or Kurumi dying has already been noted, but on top of that it's possible that at least one of the Fallen Girls will die too. For one thing, the university is currently swarming with zombies thanks to the combined actions of Takahito and Ayaka. Secondly, it's been possibly confirmed that the virus is airborne, which explains how Takahito and Kougami suddenly got infected. With both of these dangerous hazards being around, it's highly unlikely all 4 of the Fallen Girls will survive. As for which one may die, it'll likely be either Touko or Rise, since they're gotten quite a bit of development and characterization and thus their deaths will be more tragic, while we know barely anything about Akai and Hikako.
Referencing the earlier WMG about Megu-nee coming back, I see Yuki's infection, if it does happen, being due to reuniting with Megu-nee, literally or figuratively, and being completely blind to the fact Megu-nee is the real one, hidden by her inability to see her as a zombie, or her seeing Megu-nee is a pre-cursor to her own, hidden, infection starting to take over and that she wants to see her one last time.
He's not exactly in the best condition right now to begin with, due to the airborne virus infected him. He's also shown sweating heavily and has pulsating veins all over his face and neck, which are both symptoms showing that the infected victim doesn't have much time to live. There's also the possibility that he injured himself badly when he crashed his car into the wall while trying to run over Miki and doesn't feel his injuries to being on the verge of turning into a zombie, and him moving around would only make this even worse. Chances are he will likely die in the next chapter either from the virus, the possible injuries he sustained in the car crash or being killed by another character for attempting to kill Miki.
- Confirmed, as Takahito finally meets his demise in Chapter 54 at the hands of Ayaka, who pretty much kills him just for fun.