Aku no Hana is special.

I wish I had experienced this story before. Aku no Hana is not a story of a high school boy named Takao Kasuga who reads strange books during classes and a girl in his class, Sawa Nakamura who is bold enough to cuss at their homeroom teacher, but it’s a story about every adolescent.

Sawa Nakamura, All Worlds Alliance Wiki

Impressions: Aku no Hana (Flowers of Evil) :: Ani-Gamers

The Flowers of Evil, Vol. 4 by Shuzo Oshimi

Aku no Hana - AAAPodcast

The Flowers of Evil, Chapter 26 - The Flowers of Evil Manga Online

The official English release of The Flowers of Evil or Aku No Hana was botched. And this isn't the only example. : r/manga

As Flores do Mal (Aku no Hana) - Vol. 3 Mangá: NewPOP - Mangá - Magazine Luiza

As Flores do Mal (Aku no Hana) - Volume 03

Stream 花-a last flower-(Aku no Hana/Flowers of Evil) ED by Selorm Aglagoh