If he's anything like me - BakuDeku

Delirium

Izuku didn't want to be left alone, but he was terrified of this strange world he was in. Everything was off. First, there was no such thing as All Might, which in and of itself made Izuku want to die. His room was still filled, every shelf and every inch of every wall covered with posters, but none of them were All might. There was Spider-Man, Batman, System Of A Down, Rob Zombie, Nirvana, Mirkou, and even Crimson Riot posters, but All Might's face was nowhere to be seen.

Izuku even did a quick Google search to make sure he wasn't going crazy. All Might did not exist.

Okay, Izuku thought. Maybe this is just a really weird and specific dream.

But even after he forced himself to fall asleep, he still woke up two hours later in the same place. No All Might. Just Serj Tankian's face from 1998 staring at him from across the room.

Lovely. Izuku rolled out of bed and checked his phone. It was almost five o'clock. In his normal house, his mom would've lost her mind if Izuku stayed cooped up in his room for longer than an hour. He usually only stayed in here for homework or because he was sick, other than sleeping obviously.

Izuku made his way downstairs, now curious about what his mom was doing.

He wished he stayed in his room.

In the living room was Katsuki, lounging on the couch with Izuku's mother. They were sharing a bowl of popcorn, watching the Lego Batman movie.

"Hey honey," Inko greeted her son. "Katsuki stopped by after school and told me you weren't feeling well, so I thought it was best to let you sleep a while. How're you feeling?"

"Ka...Excuse me?" Izuku choked out. "I... Oh my god, I think I'm going to be sick."

"See, Auntie?" Katsuki muttered to Inko. "I told you something's wrong with him."

"Oh, my poor baby," Inko mewled, helping Izuku to the bathroom. "Have you been taking your Sertraline, love?"

"What? What are you talking about?" Izuku squeaked. "I don't... I don't know what you're talking about. This is all wrong, mom. This isn't—"

"Katsuki, can you call the doctor?" Inko said, letting her son use her as a crutch as she beelined to the bathroom. "Hurry, please!"

Izuku was still hovering over the toilet bowl when the doctor showed up twenty minutes later. She acted like she knew Izuku for years, but in reality, Izuku had never seen that lady in his entire life.

"Izuku, sweetheart, can you tell me what's wrong?" the doctor asked as his mom rubbed his back. Izuku had finished throwing up a few minutes ago, and now he just kneeled on the tiled floor, swaying under the yellow fluorescent lights.

"I don't know," Izuku muttered. He tried to ignore Katsuki who stood in the doorway, his ruby red eyes filled with unfamiliar concern. Izuku was so confused, it was making him physically sick. He didn't know why the new environment was affecting him so negatively when, overall, it was much better than his real life. For every birthday he could remember, Izuku had wished for Katsuki to be his best friend, rather than his tormentor. Yet here he was, in a dream where his wishes literally came true, and he was throwing up his guts on the bathroom floor.

Izuku was starting to think this wasn't actually a dream.

"He seems to be suffering from extreme delirium," the doctor whispered to Inko. "I think we should get him to the hospital."

"Delirium?" Inko echoed. "What do you mean?"

"Think of it like a panic attack but with confusion instead. This could be caused by anything from certain medicine side effects to low calcium to worsening lung or liver disease," the doctor explained. "I'm guessing it's something to do with his medication, but we're better safe than sorry."

Inko nodded, brushing the tears out of her green eyes. She turned to Katsuki as she helped Izuku to his feet. "You should get home, hun," she said.

Katsuki shook his head. "I'm going with you guys. If Izuku is sick, I've gotta be there."

Inko pursed her lips together. "Alright, I'll allow it, but you have to call your parents and let them know."

Katsuki nodded, taking his place at Izuku's side as they escorted him to the car.