After the separation Killua/Gon

strange and self-harm something is wrong

It was 10:30 PM. Killua hadn't felt hungry all day and couldn't sleep either. He just sat in his room on his bed, staring at the floor. Every morning, he had to rush to the bathroom to vomit black slime. The slime was always very hot, sometimes even dissolving in the toilet water. Killua didn't tell anyone about this; he kept it a secret. To prevent more slime from coming out, he tried to suppress it, but this caused his throat and stomach to burn, leading to cramps.

Killua suspected that the slime was injected into his body by Rick in the lab. What an asshole, Killua thought. He had no idea how to get rid of the slime but knew he needed to calm down, which wasn't easy. He just sat there, everything was quiet, no noise except the wind. The streets were silent.

An hour and thirty minutes passed. It was now exactly midnight. Killua started hallucinating. As if things weren't bad enough, these hallucinations were not the typical shadows. No, Killua saw familiar figures and sometimes footsteps. Whenever he looked down and glanced up from the corner of his eyes, he saw long legs. Every time he quickly looked up, there was nothing there. This happened repeatedly, and Killua was too scared to sleep or even lie down.

Killua tried to ignore everything, pretending it wasn't real. "It's all good, it's all good, none of this is real, it's all good," he thought to himself, kicking his legs back and forth. He felt uneasy staring at the wall, so he turned to face the mirror, then looked down again. He imagined scenarios of where Illumi might be. His fears conjured various images that terrified him, things he didn't want to see, usually people or situations that could happen.

The hallucinations intensified, and Killua's anxiety grew. He was trapped in a loop of fear and dread, unable to find solace or escape from the tormenting visions that plagued him.

(Alluka should say I'm a bad big brother)

Killua could barely control himself; his head was pounding, and he began to tremble. It felt as if everyone was in the room, angry with him and closing in. He quickly glanced at the mirror and saw a reflection of himself without eyes, grinning. Unable to bear it, Killua ran to the bathroom and slammed the door shut behind him. He looked at himself in the mirror, completely drenched in sweat.

Voices began to fill Killua's head, urging him to do it. In a panic, he grabbed a knife from the kitchen and returned to the bathroom, locking the door again. He held the knife near his abdomen and then stabbed himself close to his hip. Blood started to flow and spurt a bit. Pulling the knife out, he realized it was a bit too much, but somehow he liked the feeling and continued slowly. He made several cuts on his arms and then again on his abdomen, creating small wounds. The knife was incredibly sharp, slicing through his skin easily. Killua's body was covered in wounds, but his clothing concealed them all.

Strangely, he felt better—the pain made things better. With this, Killua now felt noticeably relieved. He rinsed the knife, put it back in the kitchen, and returned to his room, trying to relax a bit. Outside, he heard loud shouting. A group of people was outside, playing loud music, talking, arguing, dancing, and singing. It annoyed Killua so much that he jumped out of the window, landing perfectly. He extended his claws and approached the group.

"Hey little guy, wanna dance?" one of the group members said as he moved closer to Killua, dancing mockingly around him. Killua made quick work of him, stabbing him in the abdomen and tearing out some of his intestines. The act of killing brought Killua a sense of satisfaction. He swiftly did the same to the others in the group, moving with lightning speed.

Killua's hands were now covered in blood, though fortunately, none of it got on his clothes. He picked up all the bodies at once and dumped them into a large dumpster. Satisfied, Killua returned to his room, feeling exhilarated from the act of killing. He had almost forgotten how good it felt.

Killua: "Hahaha, oh yes, it was about time," he thought to himself. He washed his hands and went back to his room. His body started to tingle again as the electricity within him intensified. It was worth noting that Killua often went outside in search of a place to discharge his electricity, trying to maintain control over it. Keeping this control was challenging, but having a storage solution was a start.

In the last few hours, instead of sleeping, Killua trained a bit in his room. The exercise helped him focus, but his mind kept drifting back to the euphoria of his recent kills.