A familiar name - Living with a killer

Living with a Killer 1.)

"What the heck are you?!! Who are you to tell me
"Call me Sia?"

I felt aggrieved for some reason, so I ended up yelling.

"Cough."

...? What is it? It's somehow quiet around here.
When I look back, everyone in the hospital is looking at me.
I was receiving it.

“Let’s lower our voices.”

"I'm sorry, I'm sorry..."

I'm as red as a tomato
I quickly covered my face. Ha... This is so embarrassing.
But the man, oblivious to the loud noise, approached me in a hurry.
I asked a question.

"By the way, did I talk nonsense again?
"What are you doing, Siani?"

“Well, first of all, it’s my name.”

"You're Choi Sia? What are you talking about? At that time...
"He's already dead."

You've been talking nonsense since earlier.
What do you mean I'm dead? Did you just mistake me for someone with the same name?

“Well, what’s the big deal now?”

The man smiled bitterly. If anyone comes to mind
Did you do it?

“Anyway, it seems like you’re feeling okay, so I’ll be going now.”

Leaving behind the man who was talking nonsense
As I was trying to get out, the man grabbed my arm.

"for a moment."

"!"

"Let's take a good look at your face."

Suddenly, he pulled my arm and gently hugged me
It was a rather embarrassing position, as if I was being hugged.

"What, what is it?"

"Hmm... I guess it kind of resembles him?
"It's not just the name that's the same."

Wait a minute, it's too close. Suddenly I see that face too.
I ended up seeing it from about a hand's length away.
Looking closely, it was an attractive impression, but somewhere
I also feel a little creepy.

"Oh, what are you doing!!"

I quickly pushed him away because I thought the atmosphere would become awkward.
Why, my face feels hotter than before.

“Why? Are you afraid I’ll do something weird?”

The man chuckled.

"Whew... If you have nothing to do, really! I'll go."

"..Choi Yeonjun."

"yes?"

“Don’t you remember my name?”

Choi Yeonjun, Ira. I think I've heard it somewhere.

"Well, it feels familiar.
I don't know."

"okay."

The man looked at the arm with the Ringer's needle for a moment.
Suddenly his eyes lit up.

“I feel more familiar with that side too.
Just like that friend from when I was little."

I thought I would never be able to forget these eyes.
A sadness that has sunk into the deep abyss.
What on earth is the story?