Gail Shimeji is a Chrome extension developed by gails.archive that allows users to reveal the identity of the Invisible Guardian when viewing the NFT details on Opensea. This extension serves as an accompaniment to the NFT collection "Invisible Guardian" available on Opensea.

When using Gail Shimeji, the extension takes the NFT image and decodes it into a character named Gail. Gail then walks around on your screen while you browse the NFT details on Opensea. It adds an interactive and visually appealing element to the viewing experience.

It's important to note that Gail Shimeji is active only for the Invisible Guardian collection on Opensea. No data is sent or received except for the NFT image that is decoded. The code file is also not minified, allowing users to check the entire code for transparency and security purposes.