Responses
Here are some.~ :D
http://www.mangago.zone/read-manga/berserk/ (i recommend this very hard :D)
http://www.mangago.zone/read-manga/gantz/
http://www.mangago.zone/read-manga/death_note/
http://www.mangago.zone/read-manga/tokyo_ghoul/
http://www.mangago.zone/read-manga/blade_of_the_immortal/
http://www.mangago.zone/read-manga/monster/
http://www.mangago.zone/read-manga/uzumaki/
http://www.mangago.zone/read-manga/parasite/
http://www.mangago.zone/read-manga/hellsing/
http://www.mangago.zone/read-manga/priest/ (but its dropped after volume 16, what was the author thinking? >.<)
http://www.mangago.zone/read-manga/mpd_psycho/
Any mangas with dark themes or lists i could look through?