LITTLEBUSTERS ver0.75 is a フリクリ(FLCL) Fighting Game made by 空十雲.
This version was released 30th September 2006 and was made in the ２Ｄ格闘ツクール2nd. Engine.
You can download the game here: https://web.archive.org/web/20120729001308/http://www.flclw.com/downloads/littlebusters-flcl-game/
However, the game is pretty old and you might not be able to run it.
Download all the ripped sprites, art and sound here: https://www.mediafire.com/file/gnb5koa73w6feoe/Ripped_LITTLEBUSTERS.rar/file
Join the FLCL Discord Server : http://discord.gg/sG3bxutHHk