This article, from less than a year ago, tragically displays the extent that young impressionable Dazai fans will go, for the sake of a character that supposedly causes no harm.

If this isn´t enough of a warning sign...

(Link. English translation provided)

https://warszawa.wyborcza.pl/warszawa/7,54420,27538341,smierc-jak-z-mangi-dziewczynki-zginely-jak-bohater-ich-ulubionego.html?disableRedirects=true