Personally, I read nearly every single one of Watase-sensei's works. I often compared her other works to each other, but this series was way different than I originally expected. Her older works had their shares of the heroine experiencing dramas, but when I thought Ayashi No Ceres was dark, Sakura Gari made me think twice about it.
There were events in the story, that gave me chills, and made me feel like I was the main character himself(despite the fact I'm a girl..). He experienced tragedy, but not just him, but the characters around him had their own shares of darker pasts. Sure, the uke of the story, isn't as good looking, but what made me admire this story, is how she made each character as realistic as possible.
How she breaks out of her shell of having a heroine, and having a bubbly shojo-like storyline going into something as harsh as rape and suicide, is something to give compliments to her. Frankly, despite it's overly dramatic tone, I still love how she properly fits the characters in the era, and how they are uniquely developed in their surroundings.