A deep and dark space—in this place, I told Aren that it was Sarah’s letter. Aren looked at it and was amazed. He then asked me where I got this, and I told him the truth, while being as detailed as possible, to avoid any misunderstandings. Finally, I reached the end of the story.

“...I see.” Aren’s expression was so pensive that it was hard for me to describe. I could only speculate that there was a story about the letter based on the redness of his eyes. He asked me, “Have you read what is inside?”

“No, I haven’t read it. It is polite for the owner to see it first. You can tell just by seeing that the envelope isn’t open.”

“Oh, I wasn’t doubting you. I’m sorry.”

“No, it’s fine. Huhu.”

There was another silence. He looked at the text on the outside with sunken eyes. I still remembered the words.

“I will forever remember the always shining angel who was my joy.” Aren read the text on the outside of the letter aloud. He subsequently said, “This was from one of...