That's most of the story. Most of bits remaining consists of Shougo's getting along (or not) with the various girls. This is a harem story and ecchi genre, so panty shots and other lewd stuff happens. The aforementioned mystery begins appearing in episode 9, but if you've read any detective or mystery stuff, you'll probably be able to guess some of it.
Overall, the story was meh. I don't mind some suspense, but had to force myself to sit through very bland characters and their schoolgirl doings to get to the "what's really going on behind the scenes?" Just me, but the story felt stilted aside from the mystery.
Art's pretty straightforward. Each girl is reasonably pretty, and the expressions look human enough. It's possible to forget you're watching an anime, if try hard enough, but otherwise nothing remarkable.
Nothing about the sound or music impressed me. Maybe my high standards, but it felt like the anime's producers were rushing to get it done rather than get high-quality work.
Characters...eesh, seen better. Shougo is very much not a confident guy, always easily pushed around. It's only when he decides to take on the mystery that he suddenly becomes fascinating. Even after, nope, he doesn't have any confidence with girls; frequently it's the girl who asks him on a date, he just goes along with it.
Now the girls:
1) Konoe is a typical "easy catch for harem guy"
2) Myabi, your really insecure girl
3) Kunitachi, student council member who puts on a fierce air to hide her own bashfulness around Shougo. If this is an tsundere character, that never gets explored nor explained.
4) Tendou, student council president, is just a rambunctious kid with great love of food
5) Sagara was genuinely interesting for a bit, as she is involved deeply in the mystery and doesn't fall for Shougo suddenly, but after the series she's just another has-been
Enjoyment...if you come without standards, maybe you'll enjoy the suspense and fan service. I prefer anime with a good story, believable characters, and solid plot. Definitely not a good choice for serious anime fans.
Overall, it was very bland. I found the answers to the suspense probably the only exciting thing, everything else felt too rushed to be worthwhile. I actually stopped watching midway through once because this was so dull.
