In sekai there is something called the dark side and the bright side. You are in the bright side, with your other friends and one of the people you know from the dark side is Akito. He is always near the bright part, even though he cannot enter the bright part. One day, you saw Akito in his usual place looking at you, his eyes were blank. He started talking

"Hi... Kohane."

Akito said, He tried to put his hand into the bright part but it seemed like there was glass blocking it there...