A good 'game', but has some flaws
(This review has spoilers!)
The novel was quite a good read, and the art was pretty detailed! I don't really like sad endings, although I quite agree that there are way too many 'happy endings' in stories already. If you're going to include a 'happy ending' in a far sequel that refers to this, as you mentioned in a reply to someone else's review, then a few suggestions are:
The war's over and either:
a) Leon has dug up and gotten Mai repaired (continuation of ending 1)
b) The people who originally attacked Mai and disassembled her end up reassembling her (it doesn't show them doing more than just ripping out the arms afaik, so should be a plausible ending) and sending her back to Leon (continuation of ending 2)
c) Leon learns of the war ending (like the old man?) and gets Mai repaired
There are a few (albeit minor) points against this flash, though:
1) Pressing S twice while the line's being written does not finish it (fast readers will have to wait for the line to be written fully)
2) No previous dialogue option (Pressing S too fast made me skip a dialogue because the previous line was '...')
3) There aren't quite enough options to make it interactive enough and some endings don't seem plausible (originally, Leon mentioned that they'd go back to the museum after visiting Hikari City; choosing the third option "take Mai and leave" does not mention this possibility of finding supplies there / the old man (from one of your previous games?) is entirely ignored after the house scene, Leon doesn't deal with the Boss despite the fact that a) he easily handled 3 people or so to rescue Mai initially and b) he's armed)
That's all I can think of right now. It's a good flash, nonetheless! Look forward to seeing more of your works in the future...if it's not sad ;)
Just my 2¢.