The Nocturnal Blackboard Eraser

The sound of chalk writing on the blackboard echoes through the classroom.
Why doesn't anyone, not even the teacher, notice?
Even though my name is written all over the blackboard.
When the teacher used the blackboard eraser, my name was the only thing that didn't disappear.

The classroom at night, when everyone has gone.
The light of the full moon streams in through the window; it's incredibly mystical.
I pick up a piece of chalk and stand in front of the blackboard.
I'll write my name more so that everyone will notice me.
"Hey, how long are you going to stay here?"
I turn around to see a girl standing there.
"I am..."
"You died in a traffic accident on the day of your graduation ceremony. The kids who were in your class graduated years ago and are no longer here. If you don't come to heaven soon, God is going to be angry with me."
"I see. I'm sorry for causing trouble. Then, I have to erase this."
My name, which the teacher couldn't erase with the blackboard eraser, fades away as I erase it myself.
"Congratulations on your graduation."
Being congratulated by the girl, I feel a weight lift off my heart.
...This was the phrase I had wanted to hear.

I participated in the project by Tarahakani-san.

Details can be found in the following article.