- Confirmed; Mumei says in Episode 3 that Kabaneri don't have to worry about being bitten.
- Either she also becomes a Kabaneri, possibly after being presumed dead, only to rise back up and kick ass
- Or she becomes a Kabane, and Ikoma is forced to kill her. The scene would then be regarded as one of the more unique ways to kill off a character.
- Jossed. Ikoma isn't actually involved in any romance throughout the series.
- This is supported in both the zombie-esque nature of the Kabane, and the previous translations which referred to them as corpses.
- To this theory's credit, when Mumei reveals her Kabaneri nature, her glowing spot is on her back, rather than the front, but still on the left side of the upper torso, like her heart is positioned deeper than it is normally in a human body - although rare, there are cases of people born with internal organs in positions different than normal, without however inconveniencing them (see mirrored organs, for example). So, the suicide pack didn't quite work because it didn't manage to hit the heart correctly, but at the same time the shock and injury stopped the blood flow to her brain enough to avoid the takeover from the virus. Still enough, however, to make her lose her memory.
- Jossed in that Ayame lives and apparently returns Kurusu's feelings.
At the same time, the Kabane also demonstrate great feats of stupidity. Two Kabane arrive at the Kotetsujo and don't even bother running, and instead just mozy along. In episode three, Shino doesn't even seem to realize that there are humans are all around her. Alone, the Kabane seem... lost.
That's the critical factor though. In groups, in hordes, Kabane demonstrate emotions, physical control, and something disturbingly close to a tactical mindset. Alone, they're just zombies, and fairly poor ones at that.
Of course, there are many, many Kabane in the world, and broken clocks are right twice a day. Throw enough into the mix, and some will act like they're smart. But we also see what can be classified as a rudimentary psychic power, courtesy of Mumei. In episode three (and alluded to in the second episode) Mumei demonstrates a propensity to sense what can be called the aura of a Kabane. She knows immediately that Ikoma is neither human nor Kabane, and almost manages to locate Shino at the beginning. She doesn't do this by searching for obvious marks or vague ticks of character, she literally senses that Shino is a Kabane from a totally different train car.
Now this could be chocked up to something silly like spiritual training, but then we come to Ikoma and his dreams. Again in episodes two and three, Ikoma dreams twice, recalling the death of his sister. Specifically, he dreams that she attacks him, and that later he is bitten by a Kabane, while she begs him for help. These are not events occurred in his account of the tale to Mumei. Mumei tells Ikoma that when she uses her power for too long, she falls asleep, and what happens when someone is asleep?
Am I reading too much into this? Maybe. But if I'm right, we may see that the Kabane are much more than we think they are, and that maybe, just maybe, Ikoma's sister is still out there.
- The Kabanes that attack the train in Episode 4 seem scarily organized, like they were waiting just for one to pass and knew that the mountainous area made trains more vulnerable to attacks from above, or even that previous attacks and escapes made an higher chance that the people of the Koutetsujo chose that quicker but more dangerous path. On top of that, the episode introduces a variety of Kabane that is much more strong and intelligent than the regular ones, and who seems to act like an effective leader.
- Confirmed with the introduction of Black Smoke in Episode 5.
- Is a Kabane that has become smart enough to regain their humanity.
- Is Ikoma's sister, grown up
- Is Mumei's brother.
- Very strongly implied to be true in Episode 6 and confirmed in Episode 7. He's Biba The Liberator, the Shogun's son and the leader of the Hunters, the elite Kabane extermination unit
- Is "patient zero" of the kabane virus.
- That would possibly explain how being stabbed through by a katana (half of the blade came out from his back!) seems to not have inconvenienced him that much. It wouldn't explain, however, how he sates the lust for blood, and we also don't know if a Kabaneri can drink the blood of another Kabaneri. Unless Kurusu knows, loathes himself for having become "impure" (also explaining his strong hostility towards Mumei and Ikoma), and has some secret source of blood (a loyal friend?).
- It might be true. In episode 9 Biba turns Horobi into the heart of a fused colony.
- Partially confirmed: it requires a Black Blood injection, though.
- Confirmed in episode 12. Although the above is Jossed in that he only needed Mumei to turn her into a Fused Colony to destroy Kongokaku city, and intended to dispose of her after the job was complete.
- Jossed. The series ended on a sequel hook, with Ikoma barely surviving only thanks to Biba himself without doing anything truly heroic.
- Supported by the fact that all Kabane shown in the anime have all of their limbs, even though at least some of them would have lost some in the past, due to injury or close encounters with Hayajiro.