Ulquiorra could not believe that a human could fire a Cero to counter his Cero Oscuaras, in that small instance, Zangetsu, who is currently using Ichigo's body, flashes behind Ulquiorra, effortlessly cutting off his left arm. Ulquiorra reveals that his true power is not in his offensive strength but in his regeneration. He quickly regenerates the left arm, but his quick regeneration applies to non-vital body parts, that's why he took long regenerating his eye when showing the rest of the Espada what he encountered when he first appeared with Yammy.
Ulquiorra: Stay right there, don't move. I don't want to risk using this at close range. Lanza del Relampago (Lance of Lightening (Spanish) Lance of Thunder and Lightening (Japanese))!
The first lance Ulquiorra threw missed creating a giant explosion in the desert of Hueco Mundo.
Ulquiorra: It is difficult to fully control this technique.
He prepares a second lance to fire but Zangetsu appears right next to him surprising Ulquiorra because Zangetsu used Sonido instead of Shunpo. Zangetsu throws Ulquiorra's detached arm at him but he slashes it away and then thrusts the lance. Zangetsu cathes the lance with a single hand and crushes it. Ulquiorra gives a bewildered look allowing Zangetsu the chance to slice him diagonally across the torso and then slamming him into the roof of Las Noches.
Ulquiorra: I cannot believe that I was defeated by a Human turned Hollow.
Zangetsu stepped on Ulquiorra's head and began charging a Cero.
Ulquiorra: No mercy huh, very Hollow-like. I no longer have a purpose since you defeated me. DO IT!
Zangetsu releases the Cero, creating a gigantic and powerful explosion on the dome. Even though Ulquiorra survived the blast he was left with his head, a torso and left arm. Zangetsu was about to impale the seemingly dead body of Ulquiorra until Ishida yelled out.
Ishida: Kurosaki! Stop it! How can you call yourself human if you mutilate his corpse.
At this time before Ishida tried to interfere any further I blasted the remains of Ulquiorra. Ishida turned around and looked at me with a scowl. I didn't care because Ulquiorra was still alive and I didn't want him reverting Ichigo back just yet.
Sage: Ishida, Ulquiorra was still alive. I could care even less how you look at me but there was nothing wrong with Ichigo's actions. Now step aside and go back on the couch with Sado and Orihime-chan, I will handle it from here.
Ishida: I don't know how strong you think you are but even you cannot handle Reiatsu of his magnitude without help reasoning with him.
I started to laugh at Ishida's remark. I flashed next to him and threw him at Sado.
Sage: Sado, catch him. Tell him to shut up as well.
Sado caught the thrown Ishida and then nodded in agreement. I unsheathed Shinigami.
Sage: Claim his life, Shinigami!
As my blade changed, Zangetsu used Sonido to do the same he did to Ulquiorra to me. I didn't even turn my head and slashed him with my blade, leaving an outline of Shinigami on his chest. Zangetsu spat out blood from my attack then readied his sword. I smiled as I stared him down.
Sage: At least let me use Bankai first, Zangetsu. BANKAI! Death is certain, its hour uncertain, Claim his Life, Shinigami! Now, let's see what you can do without Ichigo.
I place a barrier around the couch, not only protecting Sado, Orhime, Ishida and the little stow-away, Nel, but also holding them so they don't interfere. I smiled from ear to ear as I faced down a Hollowfied Ichigo. Zangetsu used a big ass Getsuga Tenshou (Lunar Fang Heaven Shock) at me. I swatted it away with my scythe but he was ready with a Cero. From the way Zangetsu was fighting he seemed to be aware that he was at a disadvantage. I used my left pinky to fire a small beam to counter his Cero. The resulting clash made the rest of the dome of Las Noches crumble. The roof was still there but the initial hole that was made to go to the roof, started to become wider.
Sage: Hahaha! Show me more Zangetsu! Show me if you're qualified to replace Ichigo!
We clashed multiple times but with each encounter Zangetsu's mask broke apart little by little. I was holding back Shinigami's innate power to drain whatever I slash because then the fun would end early but that didn't discourage me from using other techniques that Shinigami taught me.
Sage: Dodge this Zangetsu! Or the fun will end! Souten Daisharin! (Heavenly Wheel!)
Like a thinner Circular Getsuga Tenshou and a thicker Destructo Disc, the Souten Daisharin was a giant circular purple azure flamed ring that cleaved anything and everything. The attack was so strong it started to pull things to it to be cut. After firing many Ceros at my attack, Zangetsu was able to vere it off course into the desert. My attack left a deep gigantic chasm. I held back and it was weakend by Zangetsu before it landed so at full power I could cleave a planet and the moon around it if I wanted.
More and more of Zangetsu's mask started to fall apart. The white encasing that was surrounding Zangetsu also started to crumble. I guess just knocking away my attack made him lose more power than I thought. After a few more clashes, Zangetsu didn't have the power remaining to play with me. Before he reverted back to Ichigo, I flashed in front him, grabbed him by the red haired scruff around his collar and pulled him close.
Sage: (By his ear) When you and Ichigo reach an understanding and accept each other instead of going against one another, come back at me. This fight showed me that you alone cannot win, just how Ichigo alone cannot win. Only by the three of you coming together can you truly become powerful. Of course, not more than me.
Zangetsu looked at me with wide eyes. I smiled as I slammed down Zangetsu on the remaining part of the dome. The slam caused the remaining fragments of the Hollowfied Ichigo to break apart. The pieces then turned into Reiatsu along with the changes the Hollowfication brought and was sucked into the hole in Ichigo's chest. The Reiatsu filled in the hole, healing Ichigo and turning him back to normal. I released the others from the barrier since the danger had passed.
Sado: Ichigo!
Ishida: Kurosaki!
Orihime: Kurosaki-kun!
Nel: (With a lisp) Itsygooo!!
I laughed when Nel hugged on to Ichigo because she started to slobber and wet him.
Sage: Orihime-chan, heal Ichigo, I'm certain that the transformation drained him a lot.