Not Quite as Planned is a For Want of a NailBleach fanfic written by cerokun.The story begins with Ichigo in the Shattered Shaft, trying to regain his Shinigami powers. Unfortunately, it takes Ichigo a little too long to figure out how to find his powers in his crumbling Inner World. Fortunately, he manages to grab his powers at the absolute last second, becoming an Arrancar instead of a pure Hollow. Being Ichigo, he doesn't let this little setback stop him and the planned invasion of Soul Society continues... with a few modifications. Epicness and hilarity soon follow.Not Quite as Planned covers the entirety of the Soul Society Arc. The sequel, Still Not Going as Planned, picks up immediately after the first ends.
[Not Quite as Planned] contains examples of
Action Girl: Pretty much every female Shinigami that has appeared. The author has stated his desire to have Senna be one (as opposed to the movie where she was The Chick).
Handled Senna well so far by giving her Kido skills and halting her own kidnapping
In Ichigo's eyes, Byakuya being willing to put Rukia to death makes him more of a monster than Ichigo who has to eat souls to preserve his sanity.
Big Damn Heroes: Ichigo, Ishida, and Kenpachi arrive just in time to bail out Matsumoto and the Fifth Division.
Before that, Ichigo and Ishia's timely appearance is what prevents Aaroniero from beating the remains of the Thirteenth Division into a bloody pulp.
Kyoraku's first appearance in chapter 20 consists of him saving Hitsugaya from Nnoitora.
Isshin and Rukia make it to the cemetery in the nick of time to prevent Ichigo from eating Grand Fisher.
Big Eater: Ichigo. His appetite is so great that, after clearing out all the food in Ukitake's kitchen, he proceeds to move onto the utensils.
Plus there's his regular diet of Hollows, most of which are bigger than he is.
Blood Knight: Once Rukia is rescued and the burden of protecting his friends is lifted from him, Ichigo is actually pretty eager to fight Kenpachi in a death match.
Body-Count Competition: Ichigo and Ishida have one during the Hollow Invasion of Seireitei. Kenpachi is quick to join in. The winner is Ichigo, after he fires a Cero directly into one of the Gargantas the Hollows are coming from, obliterating everything inside.
Brick Joke: The Doctor Kurosaki Style. It first appears in Chapter 8 of Not Quite as Planned. It makes a triumphant (not to mention hilarious) return in Chapter 5 of Still Not Going as Planned.
When Ukitake first sees Arrancar!Ichigo, he immediately assumes that he's a hollow who has possessed Kaien's body. Cue Aaroniero several chapters later...
In season 1, after realizing the sheer extent of the clusterfuck that Urahara's dropped them into, Ichigo vows to send a cero up his ass. He manages to do so in the first chapters of season 2.
Chekhov's Gun: At the beginning of the Invasion, Ishida manages to defeat Renji by making a roof collapse on top of him. Much later on, Ichigo delivers what he thinks is the final blow against Aizen by causing the Sokyoku Hill to fall on him.
Combat Pragmatist: Ishida, who actively plans to defeat his opponents by having roofs cave in on them.
While he does love a good fight, Ichigo can be this when the need arises. The most obvious example is his decision to blindside the two captains guarding Rukia with his Resureccion in order to prevent them from entering shikai.
Cooldown Hug: Yoruichi gives one to Soifon after their fight.
Curb-Stomp Battle: Several, but the most satisfying is easily Ichigo vs Grand Fisher in the sequel.
Didn't Think This Through: The whole Rukia rescue plan has more holes in it that a piece of Swiss cheese, with the most gaping one being the fact that the gang had no clue how they'd get out of the Seireitei afterwards. This is lampshaded mercilessly.
Don LaFontaine: Provides narration for the Season II trailer. Fortunately, being dead is no handicap in a story like this.
Dynamic Entry: Ichigo faces off against Byakuya and Komamura in this manner.
Early-Bird Cameo: Shinji first appears at the end of Chapter 3. The rest of the Vizard are introduced in the next chapter.
The Espada also show up a lot earlier than they did in canon.
Energy Absorption: Since Ichigo can't reign in all of his hollow reiatsu, he uses Zangetsu as a sort of power sink that absorbs most of his excess reserves. While this weakens him normally, it causes his release to be ridiculously overpowered.
Evil Counterpart: Aizen to Ichigo after the former implants his incomplete Hogyoku. Both of them have to feed on souls, but their motivations are completely opposite. Aizen does it to preserve his own life. Ichigo does it to protect others from himself.
As an Arrancar himself, Ichigo doesn't mind Harribel and her Fraccion hanging out in Karakura. He's made it clear that this is only so long as they don't cause trouble.
Gambit Pileup: Seems to be heading for this. The Dark Ones, the Bount, and Shusuke Amagai all have their plans running or getting underway. And Aizen doesn't seem to be taking a break like he did for the filler arcs in the anime.
Healing Factor: In his sealed state, Ichigo heals pretty quickly and can reattach cut off limbs. He can also grow them back at a higher cost to his reiatsu. In Resureccion, he's recovered from nearly getting chopped in half by Kenpachi in the space of a few seconds, purged the poison from Kurotsuchi's Shikai, continued healing despite a poison specifically designed to counter regeneration, treated severed limbs as a minor annoyance, and healed a severed spine and numerous punctured organs in a few minutes.
No-Holds-Barred Beatdown: Ichigo delivers an epic and well deserved one to Grand Fisher, laughing and smiling like Canon Ichigo's inner Hollow the entire time.
Hiyori gives one to Ichigo in order to force him to activate his Arrancar powers.
No-One Could Have Survived That: Aizen gets his arm sliced off by a Koten Zanshuun (along with cutting one of his lungs in two), blasted through Sokyoku Hill by a Gran Rey Cero, and then has a third of Sokyoku Hill collapse on him.. Ichigo is understandably upset when it doesn't take.
Oh Crap: Constantly. One of the best comes after Ichigo and company have succeeded in rescuing Rukia when they realize they never figured out how they were going to get out of the Seireitei.
Poor Afro-san. He gets a text warning him to stay away from "the spirit that looks like a white Shinigami"... while Ichigo is standing directly in front of him.
Urahara freaks out (internally, of course), when he realizes that he's managed to turn Ichigo into a Arrancar.
Soifon flips when she realizes that she's inadvertently leaked the location of the ryoka to Aizen.
Screw the War, We're Partying: An unintentional example. The Visored spend the last third of the invasion throwing a victory party over Aizen's defeat. They are very displeased to find out that their celebrations are a tad premature.
Slasher Smile: This Ichigo is a bit more prone to wicked grins during battle than his canon counterpart. The best examples come right before he eats Kurotsuchi and during the entire fight with Grand Fisher.
Sneeze Cut: Ichigo has one in chapter 7, which comes right after the captains realize that he's the hollow they're hunting down.
Soifon gets one in the sequel, after Senna really starts regretting taking her word about the character of Squad 12.
So Proud of You: How Yoruichi manages to comfort Soifon during their reunion.
Tempting Fate: Hitsugaya catches himself before he can complete the thought, but everything rapidly goes to hell anyway. Ichigo sadly does truly tempt fate by assuming Aizen was dead after getting his arm sliced off, blasted through a mountain, and having said mountain fall on him.
The Empath: Karin. After Ichigo's transformation, Karin can feel his Hollow reiatsu. She describes it as being "like a monster under the bed", and it scares the shit out of her.
'Mayuri: (To Ichigo) "What a fantastic Resureccion! I can't wait to vivisect you in this form!"
Took a Level in Badass: Orihime. Yes, she still dislikes fighting. No, this will not stop her from severing your arm if you threaten her friends.
Chad gains the second level of his Brazo Derecha del Gigante early thanks to training with the Vizard.
Training from Hell: Ichigo, Chad, Ishida, and Orihime spent a week and a half training with the Visored.
Training Montage: Chapter 4 shows the Visored putting the gang through their paces.
Unusually Uninteresting Sight: Sung-sun, Mila Rose, and Apache witness what seems to be a Bount eating a Plus. They immediately go back to their earlier conversation.
Villain Team-Up: The Dark Ones and the Bount seem to be heading in this direction.
Wave Motion Gun: Ichigo's Gran Rey Cero, which both tore a hole in the surrounding atmosphere and caused the mountain-sized Sokyoku Hill to collapse on Aizen's head.
What Could Have Been: The author has stated numerous times that what he had planned isn't always ends up happening.
Ichigo and Ukitake's first meeting was supposed to be an all out battle.
Originally, the rescue of Rukia was supposed to feature the ryoka, Byakuya, Renji, Ukitake, Kiyone, Sentaro, Yoruichi, and Soifon marching on Sokyoku Hill, ala "The Walk to Arlong Park". Thankfully, we do get to see it in an omake.
Worthy Opponent: Aizen seems to regard Ichigo and company as this, after they give him his first real challenge (not to mention nearly killing him).