Chaos in the Land of Grass

Kurogiri sat at the center of the village, carefully surveying the surrounding areas through the vigilant eyes of the connected ninjas on night patrol. As he spotted the approaching ninja in the distance, he knew he had some time to prepare. Drawing upon his extensive knowledge of quirk synthesis, Kurogiri went through the quirk simulation process and settled on fusing three quirks - brainwashing, confession, and telepathy - into a single entity. Kurogiri using his stored chakra created the brainwashing quirk since he lacks it.

Blending the three quirks together, Kurogiri emerged with a new, incredibly powerful quirk ability that was ideal for his needs. Dubbed as Persuasive Manipulation, it enabled him to implant specific thoughts or ideas into someone's mind without their knowledge or realization that they were being influenced, as long as he was stronger than them spiritually. This fusion ability would prove to be a formidable tool in his arsenal, allowing him to manipulate and control his targets with unparalleled precision.

As Kurogiri sat there, wielding his newfound power, he felt a surge of confidence and satisfaction wash over him. He immediately put his new quirk to use, enlisting Rin's help to gather the villagers and informing them about the approaching threat.

However, when the villagers gathered, Kurogiri used his power to instill absolute obedience and loyalty in all of them, including Rin and Karin. He knew that in most demon king cases, those closest to him inevitably became his weakness through capture or betrayal. Kurogiri refused to let anyone become his undoing, and he was determined not to let anything hinder him from achieving his goals.

Kurogiri ordered everyone to be prepared for the incoming enemies, ensuring that all were attentive and alert due to his subtle use of the quirk. As he monitored the situation with the connected ninjas, he controlled some of them to confront a group of fifteen black-robed, white-masked individuals who had approached the village. It appeared that there were several different groups approaching, each with their own intentions and affiliations.

The Root Ninja, dispatched by Lord Danzo, had rushed to the land of grass as fast as possible and upon entering the border, believed the information about the creature because of no running into border patrol. As they approached the village, they were taken aback by the sight of the huge walls surrounding it, something the land of grass had never had before.

However, they were determined to complete their mission, not paying much attention to the walls. Just as they were about to continue forward, ten grass ninja suddenly appeared in front of them, shocking the Root Ninja as they had believed most, if not all, of the ninja in the village to be dead because of the creature.

The leader of the Root Ninja team didn't feel right about the situation but knew that, as a tool of Lord Danzo, the mission needed to be completed. Deciding to approach the group in front and pretend that they were there to help deal with the creature, they were interrupted by a sensor ninja who detected that the group was under genjutsu.

The disruption of chakra originated from a spot on their necks, which the sensor ninja was able to trace back to a black bee. The leader was shocked and concerned about the abilities of the creature, which seemed to be multiplying and getting more frightening.

As the Root Ninja got ready to confront the group, they did not realize that Kurogiri, controlling ten more ninja, had gathered around them during the confrontation. The sensor ninja warned the team leader about this, causing him to wonder how many ninjas were controlled by the creature. The root team leader decided to let one ninja go back and report the situation to Danzo in case of failure.

However, Kurogiri had enough of just watching and used his power to control all twenty ninja and release an earth wall jutsu to surround the root team. The root operatives were alarmed as they saw twenty ninjas in sync using an earth wall jutsu, which was not possible for even elite operatives.

Before the Root Ninja could respond, Kurogiri had the ninja jump to the top of the earth wall with ease. He was able to use his High-Spec quirk to control these ninjas effortlessly in sync using all available jutsu he learned in the village during the past two days.

The Grass Ninja then released twenty fireballs, heading towards the Root Ninja, who were able to defend themselves from the fireballs, being elite ninja. However, before they could recover, a second set of fireballs came in from the ninja going through hand seals again.

The Root Ninja were astonished by the sheer number of jutsu being released by these ninja and wondered how they had so much chakra to spare. Unbeknownst to them, Kurogiri was using the Queen Bee and All for One to supply them with chakra from his spiritual space.

The defenses of the Root Ninja were slowly being worn down, and their chakra was quickly being exhausted on defense, with no hope of making an opening. The group of twenty Grass Ninja had the fifteen Root Ninja trapped, unable to escape or fight back effectively. The Root Ninja did counter attack killing five grass ninja but the other grass ninjas never stop even with the death of comrades.

However, Kurogiri had a clone sent over to the Root Ninja, shadowing their movements undetected. The clone emerged from the shadow of a Root Ninja and used the new Persuasive Manipulation quirk to implant a strong urge to sleep.

Half of the group of Root Ninja immediately dropped down unconscious, while the remaining half felt sluggish but were still able to fight slightly. Kurogiri's clone stored the unconscious ninja using Compress and then quickly disappeared into the shadows once again.

The remaining Root Ninjas were terrified because they had experienced a similar strong urge to sleep when the creature was present earlier. They had only overcome it with the will to complete the mission. Witnessing Kurogiri's clone touch the ninjas who could not fight the urge and turn them into blue balls in his grasp before disappearing into the shadows was too much for them to bear.

They were completely distracted, unable to focus on defense because Kurogiri had never stopped the Grass Ninja from attacking them, taking advantage of the multitasking aspect of High Spec again. Seizing the opportunity provided by his clone, Kurogiri increased the chakra in the fireballs hurled at the Root Ninja, decimating the remaining roots.

Kurogiri also controlled the Grass Ninja to drop down into the earth enclosure and make sure that all the Root Ninja were dead. While this confrontation was taking place, another group of ten Grass Ninja was confronting a squad of five ninja in tan outfits and white towels from the Sand Village. Kurogiri had the Grass Village information on hand and could deduce that these sand ninja came to observe the situation due to such a small squad.

Despite their reason for coming, Kurogiri had the ten Grass Ninja attack the Sand Ninja. Five of the Grass Ninja used wind-style jutsu, and the other five used fire-style jutsu. The Sand Ninja, being all elite and sent to gather information in a dangerous area, were able to defend themselves against the attack. However, they were taken aback by the high level of coordination exhibited by the small village ninja, considering they believed them already defeated by the creature.

Back in the village, Kurogiri then took the captured compressed ninja from his clone and sent it towards the Sand Ninja. At this point, Kurogiri's main plan was to confront anyone who came and capture those he could, unless a group or person strong enough forced him to move personally. The clone was tasked with catching whoever they could knock out, and later, he could use the Queen Bee on them to get more chakra sources since he could turn quantity into quality.

With access to the information in the Grass Village, Kurogiri was able to determine a few people and entities that could give him trouble, such as Kages and Jinchuriki. However, none of this deterred or frightened Kurogiri. Instead, it excited him and, under the influence of High Spec, he began making plans to catch them since from what he read they have an abundance of Chakra.

The clone darted towards battle against the Sand Ninja, maneuvering through the shadows to quickly join the fray. Despite the Grass Ninja's impressive coordination, three of them were taken down by the elite opponents. The Sand Ninja worked together seamlessly, successfully eliminating three of the ten Grass Ninja around them.

While Kurogiri was satisfied with this outcome, he noticed one of the Sand Ninja controlling a puppet while another used a fan, the last using basic weapons. Ignoring them momentarily, he utilized Persuasive Manipulation to induce sleep, but the ninja only experienced dizziness and confusion.

Seizing the opportunity, Kurogiri's clone utilized compress and swiftly retreated into the nearby shadow. Kurogiri refocused his attention back onto the patrolling ninja, as he was still being hunted by random rogue ninja amidst the chaos.

Kurogiri was happy with the chaos because the best opportunity can be found in chaos.