Send me a '†' and my muse will sing your's to sleep as your muse passes away
Sakura Nagashi - Utada Hikaru (song cover sung by Mitchel Matuszak, since the English lyrics are from him, not the official translation)

In. Out. In. Out

That was the weak breathing rhythm from Sei as he lay weakly on the hospital dead, slowly dying. Few days ago, Sei had to go through an experimental surgery, which was nothing new for him. There was always one ready for him here in Oval Tower. What he didn't expect was that the surgery turned out to end badly, leaving him in a crucial state.

Breathing turned out to be a difficult task for him but Sei tried his best to suck in the oxygen into his lungs through slow, painful gasps. He need the assistance of machines to supple oxygen through oxygen therapy. Without any sort of medical care or treatment, Sei would have been dead by now. Despite being born and cursed with a fragile body and living a miserable life, Sei was still happy. Happy at the fact that the Alphas were taking care of him, although he wished they didn't have to witness such a sad fate.

Opening his mouth slightly, Sei looked at them and smiled. "Alpha. Alpha 2." He called them out with his low, weak voice. "Do you mind… if I ask you something? I hope it's not selfish but could you sing me a song? It'll make me feel better."

The two stood there in silence but nodded. They cannot turn down a request at a moment like this. Standing on one side of the bed, one of them took a light hold on Sei's hand while the other stroke carelessly through the black hair strands. This was the only thing the Alphas could do for Sei now.

Taking in a deep breath, their voices came out in a melodious sweet yet sad tune.

Watching the cherry blossoms fall
In the wind casting shadows
On the distance between us two
"Time has come, too early"

As they continued to sing, a heavy sinking feeling built inside of them. They weren't sure what it was but it bothered them. A lot.

Everybody finds love…
In the end.

Gripping on the touch felt on his hand, Sei shut his eyes with a smile. Slowly breathing, he listened to their song.

Breathe in. Breathe out.

I never did tell you everything.
I can't believe I won't see you again.
I never did tell you everything.
I'll never get to tell you everything.

They could feel their song getting stronger. It was a strange but amazing feeling. An intense overwhelming sensation that left the androids confused on why they were experiencing it. What would you call this? They wanted to ask Sei but knowing it would disrupt their singing, the Alphas continued on.

Watching the cherry blossoms fall
In the wind casting shadows
The trees could only watch the loss
Of their beauty, powerless

Sei's chest moved up and down slowly. He could feel his life sapping away, leaving him barely conscious. However, Sei could sense the Alphas' singing. It was beautiful. He wanted to talk more with them but he didn't have enough energy to do so.

No matter what or how scared I am
I can't look away ever again
When I slow down and time stops for me
I'll finally find you and where I should be

The last line of the song was sung, the Alphas exhaled out loud. They are now left alone in this cold, silent white room. Looking back at the motionless body covered under the white bed-sheets, the twins leaned closely to Sei's face and pressed their lips against the cold forehead. "Goodnight Sei," the two whispered as if the other would wake up from a peaceful slumber.

"Sleep well."