Wow. This is.. amazing. To be honest, when I started reading this manga was expecting it to just be a bunch of fluff, but it's so much more than that. There's actually depth to all the characters; first and foremost, the heroine is an intelligent, mature lead. She isn't just labeled as "smart" but then dumbed down to twist the plot, either. She's very intelligent, and she stays that way regardless of the plot, which is something I've very, very rarely seen in a manga. Furthermore, Teru is emotionally intelligent as well, which is definitely something I've never seen in a manga. She understands when it seems like someone may have a crush on her, and she's equally aware of her own feelings. She's also strong and quirky, and just a wonderful main character.
Kurosaki, on the other hand, is equally, utterly charming. I love him. He's got that necessary bit of mystery to him, and while he's strong he's also vulnerable -- in other words, a normal human being. He's also a worrywart, and that never fails to make me giggle. I really like his bravado in front of Teru, too; it's really adorable.
The side characters are also fantastic; Riku and Kiyoshi make me laugh all the time. Now, starting in Chapter 17, we're also learning more about Souichiro, and he's just as fascinating as the rest of them. Basically, like any shoujo, Dengeki Daisy is a strongly character-driven manga -- but it doesn't disappoint.
The plot is fantastic too. It can make your eyes water, your stomach ache from laughing so hard, and really make you curious as to what motivates each character, what mystery is surrounding them all.
I highly recommend this manga. It acknowledges the stereotypes of shoujo and basically blows them to smithereens. It's wonderfully executed. A one hundred out of ten.