In version 104e, the poster is not of a dead flower, but a poster of two monsters one pink, the other blue, that look like their fighting. The poster is still on the wall when both characters are asleep. The purple "cat" that's with the long black haired girl actually looks like a Clifairy. Since this game used to have Pokemon references, we could say it's a Clifairy, especially since the drawing is so similar.