- https://static1.e621.net/data/29/73/2973f33a5b116ed6977f9f85ca97ba80.webm
https://e621.net/posts/2436244?q=zero-sum
FULL -https://static1.e621.net/data/b5/89/b589cd800fe90cfcedc802caaa948612.webm
https://static1.e621.net/data/89/a7/89a760b6fbc6213bee4da4da6cfda365.webm