Comedy, one of anime's most popular genres, is usually associated with lightheartedness and positivity, seen as the type of shows people turn on to tune out of their real-life problems and have a good laugh. Much more morbid and gloomy than the more happy-go-lucky exemplars of the genre, dark comedies in anime seek to combine life's sorrows with the inherent farce of existence, resulting in a blend of bleakness and hilarity. The generally cheerless tone, often offensive humor, and mature witticisms make dark comedies a hit or miss with most audiences.
Source：https://www.cbr.com/greatest-niche-dark-comedy-anime/
