Natasha was standing at the bridge.

"I'm not sure who to trust."

Those words rang in Natasha's ear. She had many thoughts. She just left Fury after their discussion about his 'death'.

"I thought you were dead, Nick."

"I had to keep the circle small. You would've done the same thing."

"I know. That's the problem."

She had many other thoughts too. SHIELD infiltrated by Hydra. She got shot. Nick's alive.

She also remember her past, and the red in her ledger.

"Of course I'm not included in the circle," she thought.

Black widow doesn't have emotions. But Natasha is human. Even though she tried to hide how she feels, she also had limits.

Then she began to sing.

I can hold my breath

I can bite my tongue

I can stay awake for days

If that's what you want

Be your number one

I can fake a smile

I can force a laugh

I can dance and play the part

If that's what you ask

Give you all I am

I can turn it on

Be a good machine

I can hold the weight of worlds

If that's what you need

Be your everything

I can do it

I 'll get through it

But I'm only human

And I bleed when I fall down

I'm only human

And I crash and I break down

Your words in my head, knives in my heart

You build me up and then I fall apart

'Cause I'm only human

Natasha sigh. She touched her bandaged shoulder. It sting. She took painkillers, but the effect is gradually faded.

She turned her head, and surprised to see Steve standing few meters from her. Well spy usually not surprised but right now she let her guards down.

Steve walked towards her.

"I don't have any ideas that you like to sing. And how beautiful your voice are."

"Thanks, soldier. Actually I like to sing when I'm alone. Or if I have many thoughts in my mind. Music make you feel better, doesn't it?'

"Yeah. I also like listening to music when I feel bad. But I can't sing. That would be my wrong business," said Steve with a smile.

Natasha smiled back, but soon it's faded.

"You alright?"

"Well I'm not dead. How about you? You look miserable," she said with a smirk.Steve chuckles.

"Like you don't, huh? I'm still have many thoughts, about SHIELD, Fury, Bucky. But I'll be fine. What's in your thoughts? You can tell me, Nat."

"Sorry Steve, but I don't wanna talk about it right now."

"It's okay. You can talk to me anytime, if you want too. Get some rest, Nat."

"Aye, aye, captain," Natasha grins. "You should get some rest too."

"I will. You first."

Natasha smiled and started walking to SHIELD Dam Facility. But after few steps, she stops, and turned her body to face Steve.

"Steve?"

"Yeah?"

"Thank you. For everything."

"Anytime."