Hogyoku Ex Machina

"In the final battle with Aizen a different choice is made, and now Ichigo and his greatest enemy have gone back to the beginning. His best friends are powerless, his allies don't know him, and everything he loves is in danger."

Hogyoku Ex Machina is a completed Bleach fanfiction by Mac Ceallach.

In the final battle, Ichigo and Aizen strike fatal blows against each other at the same time. The Hogyoku reacts by sending them both back three months to the point in time when Aizen first picked up the stone right after he betrayed Soul Society. On one hand, Ichigo has the chance to kill Aizen properly and undo damage and deaths caused the first time around. Unfortunately, the enemy too is well-aware of what has (and will) happen as well as who they should attack if they want to hurt Ichigo in the worst way.

It's different from most other Peggy Sue stories in that both The Hero and the Big Bad get sent back in time, leaving both sides on a level playing field. Ichigo also wastes no time in explaining to everyone that time travel is going on, forgoing any masquerade or working behind the scenes.

Comes highly recommended on the Recommendation page.

"Hollow: You'd think had raped your soul or something. Ichigo: What? Hollow: You didn't want it, did you? Ichigo: No, but- don't say it like that! Hollow: Ah. Sorry. Penetrated, then. Penetrated deeply. Without permission. Into virgin territory. There was thrusting involved. Am I doing any better now?"
 * Anti-Villain: Starrk, Lilynette,.
 * Applied Phlebotinum: The crystals that create holograms.
 * Badass in Distress:.
 * Big Damn Heroes:
 * Also,
 * Blatant Lies: Zangetsu tells Renji that Ichigo is practicing how to split himself up to make training in other areas easier. This is a brazen lie, as they have entirely different reasons to do this and it will actually make the training harder. Ichigo is rather disturbed that his sword is a much better liar than he is.
 * Brick Joke: Zangetsu and the hollow frequently complain in one of the anime's omake that Ichigo's mindscape rains when he's depressed and that it has no animals, particularly purebreed dogs.
 * Brought Down to Normal: Due to events near the beginning of the fic, Orihime loses access to her Shun Shun Rikka abilities, and it's said that it will take at least several months before she returns to her full power. According to the author's notes, this was done partially to serve as a Drama-Preserving Handicap: "I wanted to take away Tite Kubo's little get-out-of-death-free card."
 * Casual Danger Dialogue: Ichigo, his hollow and Yamamoto discuss whether or not it's possible to All while   try to kill each other about 20 feet away.
 * Celibate Hero/Chaste Hero/Clueless Chick Magnet: Ichigo as usual and lampshaded mercilessly.
 * Chekhov's Gunman:.
 * Chronic Hero Syndrome: Ichigo as usual. While thankful for it, it irks Yamamoto and Soi Fon to no end.
 * Knight Errant
 * Cock Fight: Hilarious, non-romantic example between.
 * Comedic Sociopathy: As usual, Mayuri and the hollow dish it out with aplomb.
 * Crazy Jealous Guy: Non-romantic example. When
 * Cynical Mentor: Yamamoto acts as one to Ichigo by discussing battle strategies and forcing him to use his hollow abilities when he's been too frightened of them so far. He finds Ichigo far too idealistic, but as he put it, "In one thousand years, no shinigami has been born who was able to stand against the full force of my spiritual pressure." Guess who the exception was.
 * Deadpan Snarker: Ichigo's hollow. See Does This Remind You of Anything? below.
 * Defeat Means Friendship: Lampshaded when Ishida asks, "Kurosaki, is there anyone you've fought that you haven't become best friends with?"
 * Deus Ex Machina: See the title.
 * Disguised Hostage Gambit: Right after traveling back,.
 * Does This Remind You of Anything?: The hollow has fun with
 * Does This Remind You of Anything?: The hollow has fun with

"Ichigo: I have good news and bad news. The good news is that you got your powers back. Ichigo: The bad news is, you never told me how.
 * The Dreaded: The Running Gag with everyone being terrified of Unohana continues as even Ichigo's hollow self is frightened of her. There's even a fanart of it.
 * Dropped a Bridge on Him: Subverted. Aizen effortlessly slaughters several Shinigami when he and Ichigo return to the past,  The author even defies this trope in the following chapter's notes: "If I kill [Yoruichi], it'll be way more epic than that. She's awesome."
 * Enemy Mine: Yoruichi is surprised upon finding out that the Vizards fought alongside them against Aizen in the original timeline, since they have no reason to like them. Ishida suggests it was because of this trope.
 * Fantastic Racism: After learning that the Vizards that had been cast out a century ago were still alive and not crazy, the Gotei 13 members decide to actively avert this by asking if they want to come back with no strings attached,, and make plans to appoint a less racist Central 46 this time around.
 * Final Speech: Ultimately subverted since having the main character die in the third chapter would be a problem, but everyone gets the feeling that this is going on when Ichigo asks Chad to take care of his sisters and he has a hard time getting people to take him seriously about an actual threat and that he's not just becoming delusional. Ichigo references this trope at the time as well.
 * Foreshadowing: It's easy to miss, but an author's note helpfully points it out. While The Cavalry is fighting Aizen,.
 * For Want of a Nail:.
 * Ghost Shipping: The hollow just can't get enough of
 * Good News, Bad News:
 * Good News, Bad News:
 * Ishida looks hopeful*
 * Ishida looks pissed*"

"Mayuri: DO YOU KNOW HOW MUCH THAT COST? Ishida: I told you so."
 * Handsome Lech: Ichigo's hollow highly endorses ladies having physical relations with Ichigo.
 * Have We Met Yet?: Most of the Gotei 13 are thrown by how familiar the random human invader is with them.
 * Hologram: Using specially formed crystals, Mayuri created a device that allows people to project memories of theirs as holograms. It's main purpose is to not have the audience sit through Ichigo constantly explaining the plot to everyone else.
 * In Love with Your Carnage: When everyone sees Ichigo's memories of Tatsuki, which are mostly of her fighting, Kenpachi is impressed and declares that she will be welcome in Squad 11 when she dies and becomes a Shinigami.
 * It Can Think: While it's touched on in canon, in Hogykou ex Machina, the Hogyoku has the mind of a domesticated animal.
 * I Want My Jetpack: Orihime excitedly asks if there are robots in the future. Since it's only been three months, no, there are no robots.
 * I Warned You: When Ishida's warns Mayuri (not very hard, mind you) that it wouldn't be a good idea to have Ichigo attempt to place his reiatsu into a rare and valuable crystal because he's clumsy, Mayuri blows him off. Then Ichigo (having a massive amount of reiatsu and no control over it, hence “clumsy”) makes the crystal explode.
 * I Want My Jetpack: Orihime excitedly asks if there are robots in the future. Since it's only been three months, no, there are no robots.
 * I Warned You: When Ishida's warns Mayuri (not very hard, mind you) that it wouldn't be a good idea to have Ichigo attempt to place his reiatsu into a rare and valuable crystal because he's clumsy, Mayuri blows him off. Then Ichigo (having a massive amount of reiatsu and no control over it, hence “clumsy”) makes the crystal explode.

"Hitsugaya: He wants to kill me because I'm too old? (There was just something cosmically unfair about that.)"
 * Insistent Terminology: “It's Hitsugaya-taicho.”
 * Irony: When Ichigo hears that Hitsugaya hung out with his sister, he says, “He dies.” When it's pointed out that Hitsugaya probably didn't reciprocate any possible feelings of affection, he replies, “He'd fucking better not have! He's at least ten times her age!”

"Renji:"… that's gonna be creepy for a while, isn't it?""
 * I Should Write a Book About This: Orihime points out that Ichigo's adventures would make a great manga. They could even have it printed in Shonen Jump.
 * Jerkass Has a Point: Tensa Zangetsu thinks that Ichigo should keep his different selves separate so as to continue getting stronger despite having trouble controlling what he's got and already being able to cut down mountains. The hollow self claims that at some point trying to gain even more power just gets silly. Ichigo finds himself agreeing with the jerkass Super-Powered Evil Side.
 * Karma Houdini: Gin. Justified by the fact that Ichigo simply wasn't around when he committed his worst crimes and couldn't mention them.
 * Though to be fair, Ichigo's intervention also prevents those crimes from ever happening.
 * Leaning on the Fourth Wall: "We could serialize them, maybe! Shonen Jump would take the manga!"
 * Literal Split Personality: Of a sort when Ichigo figures out how to manifest Zangetsu and his hollow self in the real world. The latter and Zaraki end up getting along swimmingly.
 * Loophole Abuse: In this fanfic, ain't no rules say a kido-user can't serve in the Eleventh Division. Yumichika is surprised.
 * Mama Bear: Unfortunately, before she can act on it, she learns just how outclassed she is by  and thus has to stand down.
 * Mental Time Travel: Because of how the two of them gained their powers, Ichigo keeps all of his power-ups while Aizen ends up back at square one. This has advantages and disadvantages for both of them.
 * Mistaken for Pedophile: The characters mistake Hollow Ichigo's attraction to Nel for this. They're relieved when they learn about Nel's adult form.
 * Mr. Fanservice: The Shinigami Women's Association will NOT let Ichigo get a haircut for this reason and they take great pains to keep it that way.
 * My Sister Is Off-Limits: When Ichigo discovers that Karin held an interest in Toshiro, he decides that he's going to kill Toshiro, as he's at least ten times her age. Toshiro, who along with the rest of the Gotei 13 is watching Ichigo via a surveillance device, is less than enthusiastic about the idea.
 * Noble Demon: See Spared by the Adaptation,.
 * Oblivious to Love: And Admiration, Ichigo again.
 * Oh Crap: When everyone is watching, they figure he has a plan. When , they realize that actually no, there isn't one.
 * Only Mostly Dead: Unohana calls Ichigo this after the first fight with Aizen.
 * Original Flavor: Pretty much everyone behaves the way one would expect.
 * Papa Wolf: Zangetsu is very protective of Ichigo and his position as Ichigo's zanpakuto.
 * Pass the Popcorn: Several characters watching parts of Ichigo's life via projections of his memories (which they had permission for) and with hidden security cameras (...which they did not). At one gathering, they comment on how entertaining his life is, some bring popcorn and Coke (Rukia told them it was a tradition), and everyone, even Ishida and Yamamoto, ends up treating it like a movie night.
 * Peggy Sue: In the final battle, Aizen and Ichigo kill each other simultaneously. The Hogyoku then makes them snap back to the point in time when Aizen first touched the Hogyoku three months ago. They both quickly take advantage of the new circumstances.
 * Physical God: The full implications of Ichigo's ascension after fusing with Zangetsu are explored. Bleeding out, half-dead, he cuts through Yamamoto's Bankai like so much tissue paper.
 * And you know how powerful soul reapers have a heavy spiritual pressure? Ichigo's is like the sky: It's there, it's beyond immense, but you can't actually feel it, just like Aizen described when he first saw this form. This actually works against Ichigo when he needs to be healed; since the healer can't sense his reiatsu, they can't do anything.
 * Poisonous Person: The author added this effect to Ichigo's Physical God form to give him a weakness; basically anyone who touches Ichigo's bare skin while he's in this form gets severely burned, which makes sense given what we know about spiritual pressure if the individual in question were indescribably powerful.
 * Power Trio: Zangetsu is The Spock, Ichigo is The Kirk and the hollow and Tensa Zangetsu are The McCoy.
 * Precision F-Strike: After being told his plan will ultimately not work, Gin's eyes are wide open and he says, “Well....shit.”
 * Red Eyes, Take Warning:
 * Meaningful Name:
 * Ret-Gone:.
 * Running Gag: The various shinigami and visored commenting on how weird it is that Ichigo knows the future.
 * Running Gag: The various shinigami and visored commenting on how weird it is that Ichigo knows the future.

""People keep stabbing me. It's not as easy to survive as I make it look.""
 * People wanting to stab Ichigo with something.

"Nnoitra: "We should've just killed the human as soon as Aizen-sama knew he was alive. This setup is bullshit.""
 * Selective Obliviousness: One could make a case for Ichigo since his hollow, who's a part of him, never fails to point out his Chick Magnet status.
 * Set Right What Once Went Wrong:.
 * Shout-Out: Ishida is able to rile off several treatments for tuberculosis because of an episode of House he saw.
 * Orihime says Ichigo's adventures could be printed in Shonen Jump.
 * Isshin gets one to The Princess Bride. Take a wild guess on what it is.
 * Shown Their Work: In a way. The author planned on having Ishida and Ichigo explain what was going on with Ukitake's illness, but first asked her high school readers if they knew several random facts presented about tuberculosis (without running to Wikipedia) to be sure the characters would reasonably know.
 * Spanner in the Works:
 * Spared by the Adaptation: Gin.
 * Stating the Simple Solution: Nnoitra gets annoyed by Aizen's complex plans and Evil Gloating and wishes he would just kill the good guys and get it over with.

"Ishida: Would it modify Ichigo's memories in any way? Mayuri: It is perfectly safe! Only the first test subjects went insane!
 * Straight Man and Wise Guy: Ichigo and his interactions with the hollow are HILARIOUS and must be read to be believed.
 * Surveillance as the Plot Demands: The Captains use security cameras to keep an eye on Ichigo (and to keep updated with the plot). Unohana is particularly disturbed when she finds out Mayuri had them installed long before Ichigo even showed up.
 * Suspiciously Specific Denial: When presented with the Applied Phlebotinum.

Ichigo: Um…"

"Ichigo: Hinamori? They were pretty close, right? Matsumoto: Were? Ichigo: Are. Sorry. She got… will get better."
 * Tap on the Head: During the Disguised Hostage Gambit, most of The Cavalry gets knocked out before any damage is inflicted on themselves or the hostage. It failed to work on Kyoraku and was deemed as not even worth attempting on Yamamoto.
 * Taught by Television: See Shout-Out above.
 * Time Travel Tense Trouble:

"Ichigo's bankai was not the most powerful. It was not even the fastest. What it was, however, was the easiest to use. Ichigo had attained it and fought a captain with decades of experience an hour later, and had been able to do so because it needed no special abilities or skills beyond the fighting techniques he was already familiar with.... who was permanently in Shikai release, who compensated for the lack of decades of practice by using his Bankai as though it were his Shikai, who used his mask as though it were his Bankai, and who had still further means to increase his fighting ability."
 * Too Dumb to Live/Asshole Victim: Oh, Yammy.
 * Trust Password: Yamamoto gives Ichigo one of these for when Rukia will be Ret-Gone d in the future (i.e. the third film).
 * Ichigo convinces Gin that he's from the future by explaining the true power of Gin's bankai, which Gin never revealed to anyone.
 * The Un-Reveal:
 * Unskilled but Strong: Ukitake breaks it down.


 * Violence Is the Only Option: Oddly for the genre, most of things that are set right are done by talking to people. Telling people that their rebellion will fail and/or offering an olive branch has surprisingly good results. Notably, this did not work on.
 * Waking Non Sequitur: Subverted; Unohana thinks this is happening when Ichigo wakes up after a two day coma and, when asked about his previous fight, answers with "Aizen… turned into a butterfly." Zangetsu has to inform her that it actually happened.
 * You Need to Get Laid: Ichigo gets told this word-for-word by his hollow self since he's severely weakening himself in order to not be a Poisonous Person (it came with his Physical God status) and he's a Chick Magnet anyway, so why waste it? Ichigo's so embarrassed and adverse to the idea that the hollow turns to Zangetsu and asks, "He's not gay, right? I'd know if he was gay."
 * You Need to Get Laid: Ichigo gets told this word-for-word by his hollow self since he's severely weakening himself in order to not be a Poisonous Person (it came with his Physical God status) and he's a Chick Magnet anyway, so why waste it? Ichigo's so embarrassed and adverse to the idea that the hollow turns to Zangetsu and asks, "He's not gay, right? I'd know if he was gay."