School Days is probably one of the weakest titles I seen out of 2007 with its train wreck build up and shallow characters. Outside of the diverse musical tracks used in the ending of each episode and the decent looking character designs, everything about it just screamed 'meh' in my head as School Days seemed more interested in shocking its audience with Makoto's pimping spree and the outcome of it than developing its plot and characters.
The beginning of the series starts off as a run-of-the-mill romance title with Makoto being your normal, shy protagonist with interest in shy and reserved girl Kotonoha with Sekai taking the role of supportive best friend in hooking up the two. As expected of the genre, it turns into a love triangle with Sekai's interest in Makoto shown towards the end of the show's first episode. With this, I assumed the series was going to be focused on Makoto caught in the middle of a love triangle choosing between Sekai and Kotonoha. It was cliched yes, but I didn't care too much as anime has had a decent handling of love triangles with titles like Kimagure Orange Road, Kimi ga Nozomu Eien and Love Hina. Such titles offered decent explorations of the build-up and tensions within the love triangles, squares, etc... within such titles, even if they weren't always perfect in execution.
Unfortunately, School Days proceeds going downhill after the third episode when Makoto's perversion starts to go into full gear when he wants to go freaky with Kotonoha and gets "lessons" from Sekai on how to set up a good mood. This aspect of his character was opposite of the type of personality seen of the guy in the show's first two episodes and there was no development that led up to this sudden change in Makoto's character. And that's just the tip of the iceberg with the fall in his character. Makoto goes from pervert to sexual deviant as the show progresses where he gets bored with one female character and goes on to the next one in his pimping spree on the majority of School Days's female cast, much to the obliviousness of Kotonoha and the disgust of Sekai. Not surprisingly, each of these girls has some type of romantic interest in Makoto, which are typical of dating sim and harem titles, that the fool exploits for his personal pleasure. Outside of Sekai and Kotonoha, there's no greater depth put on most of the other female characters as their only roles in the series were to serve as stock stereotypes of high school anime characters and becoming willing gals for Makoto to have his way with.
Considering the H-Game origins of School Days and the notorious rep of its bloody bad endings, those who have had a chance to play the game or see video clips of the game online shouldn't be too surprised seeing the rampant fan service and the shocking finale to the series. While I don't mind violence and fan service in anime, it can only go so far if those are the only core aspects that stand out with a title, especially if it's trying to carry on as a romance and/or drama. I'm surprised enough folks are thinking of School Days as some refreshing premise for a dating sim spinoff despite it being more shock value than substance in my eyes. For those seeking a good romance comedy and/ or drama, definitely avoid School Days as you'll be more dumbfounded and disgusted than admiring and giddy over the shallow characters. There are better romance anime titles to look into than the train wreck that is School Days.