Everything began with this tweet which I disagree with.
My favorite part, besides the ending, it was syncronizing the Marth's throws and Ken's combo from Super Smash Bros. Melee. Despite showing the background made in Adobe After Effects, which I like a lot, but I think it works way better when you just can see the corners or hidden.
It's my own script, edited in Adobe Premiere, background made with after effects, recorded and post-produced in Audacity.
Thanks for your time :)