I want her to end up with Kazuma. I mean, he's much nicer and always there when she needs help. I personally think he's much better drawn than Tsukasa aswell. As for Midori, she really needs to make her mind up geez. I mean, they both like her alot so they wouldn't back down would they? Sorta like Moe Kare!! and Hikaru not deciding till the end, I think thats whats gonna happen with UNM too.
Spoiler (highlight to view)
Midori starts dating Tsukasa, but in chapter 41 and 42 he leaves her because he thinks she likes Kazuma more. He also wants her to be happier too. The morning before this he heard Midori mutter "Kazuma" in her sleep aswell while they were dating.
It's usually the bad guys that get the main girl...but Kazuma is really cool too. Atleast he didn't force Midori into having
Spoiler (highlight to view)
sex
with him.