Prompt from @flameprincess2301 (ao3 user) : Obviously he's fooling everyone at the tower with his illusions, and itmakes her look crazy. Knowing Loki he's probably aware of that last exchange between her, Tony, and Thor. Sooo... he could turn up in her home and play onher anger and insecurities making her feel crazy, and maybe she just starts believing he's not real and begins to form a relationship with him like aninvisible friend.

A/N: I LOVED this idea. I had a few prompts about Loki showing up at Y/N's apartment, so here <3

...

You've taken Tony's advice and taken a few days off. Granted, two of the three days which you've taken have been a Saturday and a Sunday, but you didn't really need to take time off.

You're not seeing things.

It's Sunday morning, and you're sat on your sofa in your apartment eating breakfast, absentmindedly watching TV as you do. You feel better today; you've already planned to apologise to Tony and Thor first thing tomorrow.

Maybe, just maybe, your mind had been a bit affected by being controlled. But you were sure Loki had been in your office. Stabbing someone in the stomach wasn't something you would just make up.

You're thinking about it when you get a bad feeling again. It's strong, like last time.

You grab the remote control and mute the TV, listening hard. Nothing happens.

After a minute you relax slightly; you're probably just paranoid.

Then the doorbell rings.

"Hello again." Loki says when you open the door. The shock isn't as abrupt as the first time, but you're still speechless. You stand and stare at each other in silence for at least fifteen seconds.

"Shall I invite myself in?" he asks.

"Is there any point me telling you to go away?"

"I shouldn't think so, no." he responds, pushing past you into your apartment. His torso brushes against your arm as he does; he is definitely there.

You stand in the doorway for a few more seconds, reeling. A man is walking along the street, hand in hand with a small child.

Does no one recognise Loki?

You come to your senses, closing the door and moving back into your apartment. Loki is looking around the kitchen, a look of mild interest on his face.

"Your chambers are quite pleasant."

It might be because you're in shock, but you snort loudly. Loki scowls at you, and the humour of the situation quickly evades you. You open your mouth to apologise, and then close it again.

Loki narrows his eyes at you, and then walks into your living room, looking out of the window. He's so tall. He looks ill, but that's nothing new. You wonder if they're feeding him properly, and then instantly wonder why you care.

Should you call someone? It dawns on you that you don't have a phone number for Tony. And Thor probably doesn't have a phone. Who else would you call? Nat? She'd probably worry about you; everyone thinks Loki is still in a cell.

"Why did you bother ringing the doorbell?"

Loki turns back to you, looking thoughtful.

"Isn't that Midgardian custom?"

"You didn't care much for 'Midgardian custom' when you brought an alien army here to try and take over the world."

You've opened your mouth before thinking again. Loki just watches you as your expression moves through anger, regret, and then fear. There is a very loud silence.

"I won't bother next time."

You breathe. He gives you an appraising look.

"Next time?" you say suddenly.

"Well, yes. Unless you plan on putting me out of my misery properly this time."

You can't get used to him speaking of... that, so blatantly.

"If that's what you came here for, you're out of luck." you tell him. He sighs.

"I figured."

You swallow nervously.

"Then... why are you here?"

"I'm bored." Loki tells you, sitting down on your sofa and leaning back, closing his eyes.

It suddenly hits you for the first time that he's in your apartment. Loki. In your apartment.

He opens his eyes at your silence, regarding you coolly.

"Planning on running to my brother again?" he asks, his voice laced with annoyance.

A drop of indignance mingles with the shock you're experiencing. It doesn't surprise you that he knows you told Thor. 

"You're a criminal. You're meant to be locked up, what did you expect me to do?" you ask him incredulously.

Loki closes his eyes again, not deigning you with an answer. You sit down on the arm of your sofa in defeat, as far away from him as is humanly possible. Then you look over at him.

It strikes you for the first time that he looks tired. The dark shadows under his eyes, along with his malnourished physique and clearly unwashed hair, makes him look sort of... pitiful.

"Don't." he says suddenly.

You frown. He hadn't even opened his eyes.

"Don't what?"

"Pity me." Loki says, after a pause.

"I don't pity you. You're a-"

"Murderer. Criminal. You've told me."

"Exactly." you say, as though that settles the matter. Some small, hidden part of you does pity him, but you wish you wouldn't.

Loki sighs, then opens his eyes and turns to face you.

"Well, I must admit this isn't what I was hoping for."

"What do you mean?" you ask.

"I was hoping for a better reaction. I thought you'd... try and call someone, or stab me again." Loki tells you. You gape at him.

"You were bored... so you thought you'd try and get someone to stab you?"

"I... suppose so, yes."

He's mad. But for some inexplicable reason you don't feel as nervous anymore.

"How are you here? The cells in Star- the Avengers Tower, they're as secure any cell can be. And there's CCTV, and the guards..." you trail off, watching him. He gives nothing away from his facial expression.

"How do you think I'm here?" he asks you, shifting forwards slightly. He winces as he moves; you pretend not to see.

"You're casting some sort of illusion." you say. Loki smirks.

"So you don't think that you're going mad."

You shake your head. Loki raises an eyebrow as though in approval.

"What if I do this?"

He disappears.