Top 10 Anime & Manga Fan Theories That Are Wild... but Kinda Make Sense

Okay, fellow anime degenerates, buckle up because we're about to dive into the rabbit hole of fan theories that'll make you question everything you thought you knew about your favorite series. These theories range from "wait, that's actually genius" to "this person needs to touch grass" – but honestly? They're all so detailed and well-thought-out that you might just find yourself believing them.
1. Pochita Ate Part of the Death Devil (Chainsaw Man)
It's still unclear how a fear as simple as chainsaws came to be the Devil that Devils fear most. Chainsaw Devil's ability to erase other Devils from existence is also quite peculiar, conceptually tying him to a much more primal fear — death. The theory suggests that Pochita consumed part of the Death Devil to gain his unique Devil-eliminating powers. Think about it – what's more terrifying than permanent erasure from existence? This would explain why even the strongest Devils tremble at the sound of chainsaws revving.
2. Fire Force and Soul Eater Share the Same Universe (Fire Force/Soul Eater)
This theory had fans connecting dots for years before it was officially confirmed. Fans had long suspected that Fire Force was connected to Soul Eater, and this was confirmed during Fire Force's final manga chapter. The protagonist Shinra Kusakabe ends up changing the world to worship death instead of life which fundamentally changed the way the world worked. The grinning moon, the easter eggs, Arthur being the original meister for Excalibur – it all makes sense now and it's absolutely brilliant.
3. Light Yagami Became a Shinigami (Death Note)
This theory will mess with your head in the best way possible. In Death Note: Relight, there's an unnamed Shinigami who fans think is a reincarnation of Light Yagami, wearing a blood-stained coat that looks like the one Light wore when he died, and he has intimate knowledge of Ryuk. The kicker? He tosses Ryuk an apple with the exact same movements Light used when he was alive. Sure, the series says nothing happens after death, but what if Ryuk was lying? What if becoming a Shinigami is just another level of the game?
4. Muzan Specifically Targeted the Kamados for Their Dance (Demon Slayer)
Random peasant family gets wiped out by the demon king himself? Sus. The theory suggests Muzan targeted the Kamado family because of the Hinokami dance, a ritual that could potentially defeat him and the Twelve Demon Moons. He knew about its destructive potential and wanted to eliminate the bloodline before it could be used against him. The only problem? He didn't do his homework and missed Tanjiro entirely. Classic villain move, honestly.
5. Suletta and Eri Are Different People (Mobile Suit Gundam: The Witch from Mercury)
Many fans were already speculating during the first season about the idea that Eri, the precious four year old in the prologue, isn't the same person as Suletta Mercury despite the similar appearances and mannerisms. The math didn't add up – if the massacre happened 21 years ago, Eri would be 25, not 17 like Suletta. Turns out fans were right, and Eri's mind was actually inputted into the Gundam code-named Aerial. Sometimes the details really do matter!
6. Yoshida is the Death Devil (Chainsaw Man)
Ever since the introduction of Fami, fans have been speculating about the identity of the only remaining Horsemen of the Apocalypse — the Death Devil. For many, the most enigmatic supporting character of the new part, Yoshida Hirofumi, seems likely to have a connection with it, and might even be the Death Devil himself. His overall mysteriousness, the way he casually mentions eating the Death Devil to Denji, and his apparent familiarity with Fami all point to him knowing way more than he's letting on. Plus, who else could be that calm around all the chaos?
7. Power's Host Took Her Own Life (Chainsaw Man)
This theory gets dark real quick. Power takes over her host in a deserted forest, where the person is naked and alone. Many speculate that this location is Aokigahara — the infamous Japanese "suicide forest" where Power's host chose to take her own life. The cuts on the body's wrists that Power used to manipulate her blood also point to the morbid accuracy of this theory. It adds a whole new layer of tragedy to Power's character when you think about it.
8. Kyon is Actually the God, Not Haruhi (The Melancholy of Haruhi Suzumiya)
This theory is wild and completely wrong, but hear me out on why people believed it. Some fans decided to disbelieve Haruhi being a god and go forth with a counter theory: that the main male protagonist and relatively normal tsundere Kyon was the god and not Haruhi. The logic was that it felt "too convenient" for the title character to have god powers. Thankfully this theory was debunked because honestly, how often do we get female characters this powerful and interesting as leads?
9. Saitama Will Become the Ultimate Villain (One Punch Man)
This theory is darker than Saitama's workout routine. The idea is that his overwhelming power and growing boredom will eventually lead him down a villainous path. He's already shown frustration with his lack of worthy opponents – what happens when that frustration turns into something more sinister? The hero who can defeat anyone with one punch becoming the threat that needs to be stopped? Chef's kiss for the irony.
10. Star Platinum is Jonathan's Ghost (JoJo's Bizarre Adventure)
In the world of JJBA, nothing is impossible, which makes theories like Star Platinum being an incarnation of Jonathan plausible. Think about it: Star Platinum looks remarkably similar to Jonathan, they share the same build and fighting style, and Jotaro is Jonathan's descendant. The theory suggests that Jonathan's noble spirit manifested as Jotaro's Stand to protect the Joestar bloodline. It would explain why Star Platinum is so ridiculously overpowered compared to other Stands – it's literally powered by the original JoJo's determination.
The Bottom Line: These theories show just how invested anime and manga fans get in their favorite series. Whether they turn out to be true or completely off-base, they add another layer of enjoyment to the reading/viewing experience. They make us look closer, think deeper, and sometimes discover connections that even the creators might not have intended.
So next time you're reading manga or watching anime and something feels off, or you notice a weird detail that doesn't quite add up – don't ignore it. Dive down that rabbit hole. Start theorizing. You might just stumble onto the next big fan theory that has everyone talking.
What's your favorite wild anime/manga theory? Drop it in the comments – I need more reasons to question everything about my favorite series!
P.S. - If any of these theories just ruined your perception of a series, you're welcome. That's what we're here for. 😈
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