There was no direct relationship between the April 1st Paranormal Event Book and Tsubasa Chronicles because they were independent literary works and animation works. However, there were some scenes and elements in the April 1st Paranormal Event Book that were similar or similar to Wing's Chronicle. For example, the " Haunted Island " in the supernatural event book on April 1st was similar to the " Hidden Island " in Tsubasa's Chronicles. They were both mysterious and dangerous places. In addition, the " monsters " in the April 1st supernatural event book were similar to the " monsters " in Tsubasa's Chronicles. They were both creatures with unusual abilities. Although the April 1st Paranormal Event Book and Tsubasa's Chronicles did not have a direct relationship, there were some similar scenes and elements between the two.