- https://static1.e621.net/data/06/f5/06f5636c30db1be7f7dc6a5c16358504.webm
- https://static1.e621.net/data/11/70/1170b3dafdb34593fe4829922ae44c2c.webm
https://static1.e621.net/data/44/1a/441a812201afa5e1798aa1a8e45c1648.webm
https://e621.net/posts/2721717?q=zero-sum
- https://static1.e621.net/data/29/73/2973f33a5b116ed6977f9f85ca97ba80.webm
https://static1.e621.net/data/d0/8e/d08e837154f0370c9c1ce916992dbf8a.webm