Don, a quiet, kind boy, is being bullied mercilessly by Yaragase and his gang, for no other reason than accidentally sneezing on him one day. Boku and his friends notice these acts, but refuse to take action as they don't want to be the group's next targets. But as the days pass, Boku can't stop thinking of poor Don, and wonders if he needs to finally speak up for the boy...
Takao Kasuga is a lonely boy who spends his days immersed in books to escape his frustration with life. His only source of joy is the beautiful Saeki, who he secretly admires from afar. However, Takao's obsession goes too far one day when, in a moment of emotional folly, he steals the girl's gym clothes and takes them home with him. Worse, his terrible deed is spotted by Sawa Nakamura, a mysterious outcast who sits behind him in class who threatens to reveal the boy's secret unless he promises to engage in a contract with her. At first it seems Sawa just wants some companionship, but soon it becomes clear that this "contract" involves more than mere afternoon chats. In fact, Takao is about to discover just how dangerous his bond with Sawa is and how it threatens to tear everything - his life, his love, and even his sanity - apart.
Both of these anime feature unusual art and animation styles, as well as an unusually sensitive, realistic, & complex focus on contemporary Japanese cultures of bullying & conformity experienced by school-age children.
Shiranpuri and Flowers of Evil are both quite dark dramas about forms of bullying and how it affects those involved - albeit dealing with different ages and such. Both also have a pretty unique animation style than typical anime.
There are some things that can only be said after death. Aided by a talking staff that thinks it is alive, Fumika delivers Shigofumi, the last words and feelings of the dead in the form of letters, to their addressees. Whether they are letters of apology, revenge, or simply a final farewell, she always brings them to their destination. Delivering Shigofumi is not always an easy job; as some people refuse to believe such things as letters from the dead are possible, while others are afraid of what these letters might contain. But the mail must go through; what the recipients decide to do with it afterwards is up to them.
Shigofumi has supernatural elements and Shiranpuri doesn't, but what I see as the main connection between these two shows is their focus on contemporary social issues in Japan. Shiranpuri focuses on one, bullying, and Shigofumi involves many, including bullying, debt, & forced prostitution, but fans of this sort of realism will doubtless enjoy both shows.