Okay, before we start, we need to go through a few things first.
If you don't know what Katawa Shoujo is, see http://www.katawa-shoujo.com/, then come back.
The full version of Katawa Shoujo contains adult material.
Promise that you are over 18 years old and that you will not make the material available to persons below that age.
Also, please don't bother the original developers on the forums or IRC about bugs in this. This is entirely unofficial and not controlled by them whatsoever.
This includes typos, graphical misplacement, downtime, and any other glitches of any sort. Bug me instead: https://bugzilla.happinessforme.com/, or use the official distribution until HTML5KS is feature-complete.