Where can I find this video?

Not a video. It's a gif from an artist Saltyiceream (you can see it written on the bottom right corner)

Here's a page with lots of his works

https://chan.sankakucomplex.com/?tags=salty_icecream

thats Yoko Littner from an anime Gurren Lagann and its
only a GIF created by saltyicecream as a parody
no Vid

Not a video. It's a gif from an artist Saltyiceream (you can see it written on the bottom right corner)

Here's a page with lots of his works

https://chan.sankakucomplex.com/?tags=salty_icecream