pregame saihara sprite edit credits

https://addiweeb.tumblr.com/post/164589353570/aaa-i-finally-finished-it-w-basically-i-took
http://dothackeryggdrasil.tumblr.com/post/171300774604/so-one-of-the-base-sprites-used-for-the-collab
https://gayyclowns.tumblr.com/post/181314480487/honk-here-are-some-pregameshuichi-sprites-i