Just in case, here's all the answers if you want to get the (not even arousing) ending without making your head explode.
2. Co2, Water, and salt.
3. Hello Kitty.
For some reason, I got all of these things right at the first time. Does this mean my brain actually works?
Anyways, the girl's style is horrible, the animation is atrocious, the background is from a Windows XP wallpaper, and even the text looks like it came from the Notepad shortcut in your PC. Wasn't even worth the ending, plus, it only looks arousing for a three year old. It's a wonder why this game is still standing.