(Y/N) keep an extremely tight schedule for the past month. From balancing school, with hardcore training with not only the Vizards, but with Yoruichi and Soi-Fon as well. After the injuries Yoruichi got from Hierro, Yoruichi needed more experience dealing with the technique. Thankfully, one of her students miraculously has the ability to use it and now she has someone to practice with. Urahara was still making adjustments to that armor idea that (Y/N) came up with and she wasn't sure Urahara would've gotten done by the time the Arrancars were ready to invade again.

(Y/N) originally wanted to learn how to use Shunko from Yoruichi, however he realized that he still had many other techniques that he's recently learned, from the Cero to Hierro. (Y/N) thought it would be better to focus his time perfecting those and a few kido skills that he could easily master. He had to put Shunko training on hold. He also didn't forget to practice Kaidou like Unohana told him too. Thankfully, due to his body now being able to heal quicker thanks to Hollow's innate ability to heal at a faster rate, he didn't have to use his healing kido on himself as much anymore. He mostly learned it so that he can heal his friends who seem to find themselves in intense battles.

Speaking of Shunko, Soi-Fon took this time to learn how to better control hers much better thanks to her former teacher's instructions.

(Y/N)'s training with the both pretty much felt like a deathmatch everytime they activated Shunko.

When (Y/N) trained with the Vizards, he would normally skip school. He would focus on improving the time limit he had when using hollowfication. He hasn't had any significant jumps in time like he did during the first 3 days of training. (Y/N)'s training sessions with Mashiro has increased his strength and (Y/N) even started learning some kido spells from Hachi. With kido training from both Tessai and Hachi, his array of kido spells were increasing dramatically.

There was also (Y/N)'s experiment of creating a Vasto Lorde. The creation of a Vasto Lorde was still unknown and quite frankly, (Y/N) was just throwing ideas to the wall until something stuck. (Y/N) only had four arrancars at his side currently. Siegfried, Panzer, Merlin, and now Yylfordt Granz, the arrancar he fought with Renji on the day of the Arrancar's second invasion. (Y/N) knew he couldn't possibly slay thousands of hollows in the short time he had to prove his theory right or wrong. (Y/N) was also quickly realizing that he couldn't possibly make enough Arrancars that could possibly take on whatever Aizen had in store.

He had faith in the arrancars he had now, but he couldn't hastily create arrancars. Sloppily creating one would lead to a lackluster ally who wouldn't be able to compete with Aizen's best.

However, At the end of the month things would take a turn. One day as (Y/N) and Ichigo were training with the Vizards, they felt multiple huge spiritual pressures appear. (Y/N) didn't feel Harribel or her fracciones' spiritual pressure so he could rule them out.(Y/N) recognized two of the spiritual pressures by the other two were a mystery. The first was the strongest arrancar that showed up at the previous invasion. The other was one of the six arrancars from the first invasion, seemingly one of Ichigo's opponents. Though, (Y/N) didn't meet any of them in person, he made it a point to remember the feeling of any of the more prominent members of the arrancars that showed up. If two of them returned, then that must mean they were important.

(Y/N): We have a problem!

Shinji: Yeah, arrancars...

(Y/N): I'm going!

Ichigo: Me too!

(Y/N) took off, however Ichigo was held back by the Vizards

Ichigo: Let go of me!

Kensei: We still can't let you!

Love: Your friends from Soul Society are stationed here for things like this! Leave it to them!

Ichigo: But I've been training for times like this! What good is it if I don't go!

Shinji: Let him go.

Kensei: Hey! What are you thinking?! Shinji!

Shinji got Kensei and Love to release Ichigo and he took off.

Shinji: This is a way for Ichigo to get used to using Hollowfication in a real fight. I'll follow closely behind. If things get dicey I'll jump in. Mashiro! You follow (Y/N) but don't make yourself known! He's most likely going to back up the Soul Society directly and we don't need them on our radar just yet.

Mashiro: Roger that!

Shinji and Mashiro then left the base, following the two Substitute Shinigamis.

(Timeskip)

As (Y/N) arrived on the battlefield, he saw one of the arrancars fighting all the Soul Society Shinigamis (including Soi-Fon) all by himself. Captain Hitsugaya was down for the count. (Y/N) realized that the arrancar was already in his release form. The arrancar in question seemed to have 8 appendages which (Y/N) deemed looked like tentacles. The arrancar had all of the shinigamis constricted in his tentacle-like appendages and seemed ready to get rid of Rangiku first.

(Y/N) would've felt the pressure immediately to help but luckily there was someone who was just as fast as him who made it on the scene to rescue Rangiku from getting hurt.

Urahara: Well... I made it in time. That sure was close.

(Y/N): Nice save Mr. Urahara!

Urahara: Why thank you.

Arrancar: Who are you two?

Oh, hello...I didn't introduce myself. Kisuke Urahara... I'm the owner of Urahara's Shop,a humble shop that sells cheap sweets. Pleased to meet you.

(Y/N): And I'm (Y/N) (L/N)... Substitute Shinigami... Hopefully we can resolve this issue peacefully.

In an instant Urahara was ambushed by one of the arrancars who was seemingly in a daze before. Luckily, Urahara dodged his attack and landed an attack of his own. The third Arrancar then decided to jump in to fight Urahara.

???: I was going to kill the guy that interfered with me. Whatever the case,he's not alive if he's fighting Yammy... Oh well! It's just you and me "Substitute Shinigami".

(Y/N): I'll have to apologize, but this won't actually be a fair fight.

https://youtu.be/kef24Po3pc0

???: Hm.

(Y/N) swung his scythe and a tear in the sky opened up. Out of the ripple came a knight-looking arrancar.

(Y/N): Siegfried, release the rest of the Shinigamis.

Siegfried disappeared in a flash, cutting through the rest of the tentacles holding the Shinigamis.

(Y/N): Can't say I ever got your name?

???: My name's Luppi, the "New" Espada number 6.

(Y/N): New, huh? Must mean you took someone's spot...

*thinking* It must've been that guy who went after Ichigo. If I have to be honest, the other guy's spiritual energy was stronger.

Luppi: Bingo. Now then...

Luppi used one of his tentacles to attack (Y/N), but used Bakudō #8. Seki to reflect the attack.

(Y/N): Siegfried, hold him off for me.

Siegfried charged in to fight Luppi as (Y/N) went to heal the rest of the Shinigamis.

Rangiku: Give it to us straight, do you think we can beat them?

(Y/N): Huh? Yeah, I don't think he's that tough. Honestly, the 4th Arrancar that split off from the group seemed to be the strongest one. He's the biggest problem.

Ikkaku: And here we are, struggling against just one of them.

(Y/N): Don't worry, I have a trump card in case things go south. Besides, we also have Urahara backing us up.

Soi-Fon: Trump card? You never told me about this trump card of yours.

(Y/N): It's supposed to be a surprise. Besides, I don't think it's needed for this fight. Luppi has his attention diverted from our fellow captain.

From several feet away, the group saw that Hitsugaya was back up, preparing an attack.

(Y/N): Siegfried is keeping Luppi distracted and I'll assist him.

Yumichika: Do you think that arrancar of yours can hold that Espada back?

(Y/N): Huh? Yeah, of course. In fact, I think he can win in a one on one fight.

Soi-Fon: But how? He wasn't that strong when you first got him, right?

(Y/N): He wasn't, but his strength has been increasing dramatically. Same can be said for the rest of my arrancars. My Hollow's strength doesn't stay stagnant after I recruit them.

(Y/N), now completely healing the Shinigamis, got ready to jump back in the fight with Luppi.

(Y/N): Alright squad, let's take care of business.

(Y/N) flash stepped in front of Luppi, delivering a fierce slash towards Luppi's chest. Siegfried assisted by delivering a slash that released a huge wave of energy.



Luppi: You're starting to piss me off!

Just then, one of Luppi's tentacles got frozen and the ice slowly started to climb to his body.

Luppi: Wh-What is this?!

Hitsugaya then stood side by side with (Y/N), still in Bankai form.

Hitsugaya: You've let your guard down against opponents who you've injured. Haven't you ever heard of being "ready-minded"?

Luppi: You're still alive?

Hitsugaya: Hyorinmaru is the strongest of the ice-type Zanpakuto. Even if it breaks,as long as there's water, it can be reborn a countless number of times. You have no chance of winning anymore. I've had a lot of time to prepare... You've given me too much time. If your weapon is eight arms... Then my weapon is all the water within the atmosphere!

(Y/N): Give up Luppi, we don't have to kill you!

Luppi: You Shinigami are nothing to me! I'll have all of your heads on a platter once I get out!

(Y/N): Listening to reason, Luppi! We have you outnumbered and beaten. You could live to see another day!

Luppi: Nothing you say will ever change my mind! I'd rather die than to listen to you!

(Y/N): Unfortunate things have to be this way.

(Y/N) flew towards Luppi, stabbing his scythe straight through Luppi's chest. Despite being barely frozen ice, (Y/N)'s scythe cleaves through it with ease.

(Y/N): I'll make sure to use your powers for good.

As (Y/N) took a deep breath. (Y/N) was relieved that at least one arrancar was taking care of, though a part of him felt a bit bad for taking a life. It was necessary however and (Y/N) had to come to terms with it.

(End Song)

(Y/N)'s relaxation didn't last long as immediately after the fight with Luppi ended, he felt another spiritual pressure, four in fact. And they were recognizable too.

(Y/N): Harribel... and her squad. What horrible timing.

(Y/N)'s facial expression didn't go unnoticed by Hitsugaya.

Hitsugaya: Hey, what's the matter-

Just then Hitsugaya felt the same spiritual pressure. He looked into the sky and saw four more arrancars step out

Hitsugaya: Is that another-

(Y/N): Yeah, it is. Don't worry, I'll handle this. Back up Mr. Urahara.

(Y/N) made his way to Harribel and her fraccion.

(Y/N): We meet again. I didn't think it would be so soon...

Harribel: Indeed.

Apacci: This time I'll kick your ass for sure!

Sung-Sun: Apacci, your impatience is what caused you to lose during your previous encounter. Please stop acting like a child.

Apacci: Shut up will you. If you don't have the guts to take him on then stay out of it.

(Y/N): If you guys weren't enemies I'd actually find this amusing.

Harribel: Please ignore them for now.

(Y/N): So, I assume you're here for the same reason as last time? Not that I knew why you were here the first time.

Harribel: No. I'm simply here as backup. My fraccion, more specifically, Apacci, is simply here to challenge you again.

(Y/N): I-I see...

Apacci: Now stop asking questions and fight!

(Y/N): I'd rather just talk this out. This whole situation is getting pretty hectic.

Harribel: You want to try persuading us that Aizen is wrong in his actions?

(Y/N): Yes. Aizen may sound like an upstanding individual now, but he's only using you for his own benefit. The Soul Society went through an entire civil war because of his actions. All of these unethical experiments, disposal of people he deem useless, do you think someone like that should really be in power?

Harribel didn't say anything, but (Y/N) saw her flinch.

Harribel: It matters not, me and my fraccion would not be here if it wasn't by his mercy.

(Y/N): He shows you mercy now, but what will happen when he gets what he wants?

Apacci: What do you know? You've never worked under him.

(Y/N): Maybe not, but I know many who were negatively affected by him. Including my own mother... She was an arrancar just like the rest of you.

(Y/N)'s words shocked the 4 Arrancars.

Harribel: Hm... if what you said is true, then that's how you were able to use both Cero and Hierro.

(Y/N): That's right...

Harribel: I see. Apacci, he's all yours.

Apacci: Thank you, Lady Harribel. Now then... I'M GOING ALL OUT FROM THE BEGINNING!

(Y/N): Then so am I...

(Y/N)/Apacci: BANKAI / THRUST, CIERVA

(Y/N) activated Bankai while Apacci activated her release form, something she didn't do during their first fight. Her body was now covered in fur and she grew deer-like antlers.

Apacci: Sung-Sun and Mila Rose told me that you had a Bankai, but seeing it for myself makes me more excited for this fight. I'll crush you at your strongest.

(Y/N): You seem more excited than you are upset...

Apacci ignored (Y/N) as she bolted towards him. (Y/N) twirled his scythe, spinning it to deliver multiple slashes. Apacci tried to block the attack, using Hierro to stop the scythe from piercing her skin, however, the attack was too strong and cut through the Hierro technique.

Apacci then disappeared out of sight, moving faster than the eye could see. (Y/N) closed his eyes and tracked her with his sensory abilities. (Y/N) got a lock on Apacci's spiritual energy and immediately grabbed her mid air. (Y/N) used his free hand to charge a Cero and fired it point blank.

After recovering, Apacci yelled in frustration.

Apacci: Damn it! Why are you so strong!?

(Y/N): I'm sorry, I may have lied about going all out from the beginning...

Apacci: What?

(Y/N): I do hope you heed my advice and ask your friends for help, because from here on out, I will be fighting to win.

https://youtu.be/JfMFqCVtbwI

(Y/N) put his hand over his face as he used hollowfication. (Y/N)'s hollow mask materialized over his face and his power skyrocketed even more than it did originally. This caught not only the arrancars off guard but also the shinigamis.

Hitsugaya: What in the world is that? Is that-

Soi-Fon: (Y/N)? Was this the trump card you were referring to? Is that what you were training with the Vizards to control?

Ikkaku: Heh... Wait until Captain Kenpachi hears about this...

Yumichika: If both (Y/N) and Ichigo have this kind of power, then Captain Kenpachi is going to have the time of his life.

Harribel: He's tapping into the powers of a Hollow... As a Shinigami...

Sung-Sun: Mila, we should assist Apacci, whether she likes it or not.

Mila Rose: Of course.

Both Sung-Sun and Mila Rose activated their release forms, before joining Apacci's side.

Apacci: What the hell do you think you're doing?

Sung-Sun: Saving you from a death wish. I knew you were impatient, but I didn't know you were stupid too.

Mila Rose: You should know by now that you're nowhere near his level at this point.

Apacci: Ugh, you guys are annoying! Fine! Just don't get in the way...

(Y/N): Now's a better time than any... Siegfried! Panzer! Arise!

Two of (Y/N)'s arrancars rose to his side. Panzer looked like a Giant in comparison to the rest of the group, with a Shield for a right hand.

(Y/N): Siegfried, your opponent is Sung-Sun. Panzer, your opponent is Mila Rose. I'll continue to fight Apacci.

As the three on three was about to begin, Harribel observed (Y/N). She originally believed his power was a unique one for a Shinigami. It made no sense for a shinigami to have the ability to work side by side with Hollows, but knowing he's also at least part Hollow made things make sense.

Harribel: The ability to summon Hollows. The ability to hollowfy yourself. Aizen even believes you have the ability to convince many people to join your side. (Y/N) at the rate you're growing, someone like you could rule Hueco Mundo.

To be continued