https://static1.e621.net/data/65/7e/657e93554c1a6df6650050bb501e5618.webm
https://e621.net/posts/2436244?q=zero-sum
FULL-https://static1.e621.net/data/9f/b2/9fb2fd3aced8b12d49ff47172d8ab038.webm
- https://static1.e621.net/data/28/2b/282b9824ca9b6f5e6bb1e5fdb98bd2fc.webmlink to the gif