Severus, Lupin, Sirius, Fred

The war at Hogwarts ended. You approached the beds of the dead. You noticed Sirius (let's pretend he was there), Severus, Lupin, and Fred. "They died," you thought. You approached their beds and began to sing quietly (remember that song from TT? Something like "Sun, bright ray of life, shed light." That'll do.)
you are the bright ray of the sun,
Find the way in the darkness!
I ask you to return it,
What is so desired by me!

Heal the wounds,
Shed some light on life!
I ask you to return it,
What is so desired by me,
I wish...
Your last words came out quieter than usual. You lost consciousness. Severus, Lupin, Sirius, and Fred woke up almost immediately after you sang the song. (Let's assume that this song is black magic.) There was a high probability that you would die because this kind of magic is very dangerous and powerful. You lay unconscious for a day. Everyone was worried about you because your power was stronger than everyone expected. Everyone was worried about you, they thought that you might not wake up. One in a thousand people knew this black magic. And you saved not one person, but four. So the probability of losing you was much higher than usual. You knew about the consequences, but the main thing for you was still saving them. When you lost consciousness, Sirius, Lupin, and Fred were very worried about you, and even Severus was worried too. You woke up the next day in Madame Pomfrey's hospital bed. You opened your eyes slightly. You stared at the ceiling for a while. You looked around the room. Sirius and Lupin were sitting on either side of your bed. Fred was sitting on a chair next to your bed. And Severus was pacing the room. You got into bed and hugged Sirius and Lupin.
Thank Merlin. I thought I couldn't do it.
Sirius, I'm glad you woke up , he hugged you tightly.
Lupin—I thought... he hugged you too. Fred and Severus noticed. Fred jumped up from his chair, almost dropping it, and hugged you tightly. Severus, as always, remained on the sidelines.
You - I already thought the spell didn't work...
Severus, do you even understand what you did?! You could have lost your life!
You know. I didn't care at that moment. What was more important to me was saving you...