Anyway I saw bluemist’s account of Yume’s route in the game, and it turns out I overlooked a lot of stuff on her at the first half of her story

(spoiler begins here)
http://bluemist.animeblogger.net/archives/dc2-yume-asakura/
Turns out she really was a Mega tsun-tsun to begin with after all, apparently inheriting it, along with the bad cooking skills (she nearly blows up the kitchen at home), from grandma Nemu (then combine that with her lazy and aloof attitude, inherited from grandpa Junnichi, and you have a major disaster waiting). And she was bitching out on Yoshiyuki for most of the first half of her route (and it gets especially heated up when her birthday comes and Yoshiyuki comes home late for it), and she only warms up to him after the two of them confess and become a couple, then she gets major attitude improvement from that point on. (end spoiler)

I’m actually kinda disappointed they made Yume such a hothead in the anime. She became my favorite in the game actually, that is if her route is followed and after she and Yoshiyuki become a couple.
When she finds out about what will happen to Yoshiyuki i.e. him disappearing, she becomes all lovey-dovey and spends as much quality time with him as possible, whereas Otome becomes the bitch and tries to break them up at one point, with the “noble intention” of sparing Yume the pain of losing Yoshiyuki after he disappears.

And even Otome’s route in the game makes me disappointed in her to a degree
because she then starts avoiding him like the plague for the same reason as wanting to break him and Yume up in Yume’s route, to avoid the pain of losing Yoshiyuki when he disappears, and that’s AFTER he and Otome become a couple for Pete’s sake!