Although Death Note was a fairly short series, it left a mark on anime history. Fans were captivated by its dark nature, which raised several ethical and moral questions that challenge both new and old viewers alike. Thanks to the series' success, it has continued to serve as an introduction to the anime medium for many fans since its conclusion in 2007, while ultimately leaving those viewers hungry for other anime like Death Note.
Source:https://www.cbr.com/death-note-similar-anime/