Φ

From Author Wars - https://authorwars.com/books/ph-2213527.html

Overview:

Title: Φ
Author: 円城塔
Year: 2014
Type: Short Fiction

Editions/Publications:

2014 . Nova+ バベル: 書き下ろし日本SFコレクション (2014, 円城塔, 河出書房新社, ISBN-10: 9784309413228, ¥994, 448 pages, Paperback, Anthology)