Ichigo was fighting his most powerful enemy yet, Sosuke Aizen. he was in Bankai but he knew that wouldn't be enough, he had to use his hollow mask but Aizen didn't give me enough time to do so, he flashed stepped as far away as he could but Aizen was right there besides me again before he could even blink. He knew he wasn't going to get a chance to put on his mask so he had to do it while he was fighting. He concentrated on the mask forming on my face and it started to form, he could see Aizen gasp and widen his eyes before he put on his composed-this-fight-is-easy-I-could-crush-you-like-a-fly look then something went horribly wrong his concentration faltered and the mask expanded to his body he was losing control of the hollow inside me and Aizen knew it he could tell because of the smug smile that appeared on his face, he pressed Ichigo harder so he had less time to think, less time to regain control of the hollow, Isshin and Urahara who were watching noticed something was wrong with his mask and ran up to help Ichigo while he recovered unfortunately that wouldn't happen Ichigo when completely hollow he had a humanoid shape but his body was covered in hollow scales his eyes were black and his pupils yellow slits like snakes his mask looked like it was his actual face and it had horns, He was still wearing his Bankai robe and held his Bankai sword but his reiatsu had become much stronger he grinned at Aizen and Aizen cursed under his breath he knew he could never defeat Ichigo in this form and tried to get away but Ichigo was too fast. He shunpoed in front of Aizen and stabbed him through the heart and kept piercing his body until there were several holes in his chest. The lifeless Aizen stared at the sky unblinking unbreathing. "Ichigo," said Isshin Ichigo's father "Ichigo you have to stop now, you have to regain control of this hollow and come back." Ichigo said in an evil high-pitched but raspy voice "Isshin I have all of Ichigo's memories and if I remember correctly you annoyed the hell out of him and you Urahara are a pervert who doesn't take stuff seriously, that makes me angry." And in a second he stabbed both Urahara and Isshin were stabbed in the stomach.
Ichigo found were Kira was healing Rangiku, Momo and Shuhei there is a barrier around them and Captain Komamura to protect them but both were easily swiped away by Hollow Ichigo Kira tried to us Kido to move all four of the before Ichigo got to them but he was too fast and stabbed them all, luckily not in the heart. He made his way around the battle field killing enemies, hurting friends until only Uryuu, Chad, Orihime and Rukia remained. Chad and Uryuu tried to calm them down but he clawed them across the chest and threw them to the ground. Rukia said "Ichigo I know you're in there and I know you don't want to hurt your friends. Fight Ichigo like you always do fight to protect your friends!" For a second he faltered and a desperate Ichigo stood where the hollow had been he look tired but he was trying to fight but then Captain Yomamoto came up behind him Orihime cried "NO!" and Hollow Ichigo ran away into a Garganta. "You foolish girl why did you warn him of my presents I could have killed him and this whole thing would be over!" Yelled Head Captain Yamamota at a crying Orihime "He was coming back did you not see him!" Yelled Orihime flinging herself at the old man "I couldn't risk it after her injured everyone even his friend look at Uryuu and Chad!" he replied sternly "He had to be killed to protect everyone!"
Many Captains, Lieutenants, 3rd seats, 4th seats and 5th seats had gathered around and were picking sides those who like Ichigo were saying they need to trap him and force him back to his normal self but those who thought the Head captain knew what was best were saying he should have Killed Ichigo after what he did to everyone. Everyone bickered amongst themselves until Old Man Yamamoto shouted "Silence!"
Everyone fell silent even Orihime who had been previously wailing reframed from making a sound as tears poured down her cheeks "After much consideration I have decided that after everything the boy has done for the soul society he should be given a chance to regain control I will give him 3 weeks if he doesn't come back by then anyone who finds him may kill him if he is killed before that the Soul Reaper, Quincy or gifted human will pay the consequences for disobeying me. Understood?" Everyone murmured in agreement. "Good, also no soul reaper is allowed to be unaccompanied while in the world of the Living." Again everyone murmured their agreement. "Orihime will you heal Captain Unohana and Kira and any squad 4 Soul reapers so they can heal others." I will call other members of squad 4 from the soul society he raised his hand and a hell butterfly landed on it he spoke his message then it disappeared in a shower of black dust.