
absolutly !!
u need to read Color Recipe , kinda the same stuff

No, Ogawa Chise, Renaissance Yoshida, Nakamura Asumiko... are famous for Dark Stuff way before Harada

People keep mentioning Harada because she's kinda... trendy right now. Her and Ogeretsu Tanaka are currently really trendy

http://www.mangago.zone/read-manga/suki_na_hito_hodo/ didn't read it but apparently this one is not like usual harada
http://www.mangago.zone/read-manga/gintama_dj_ochiru/
http://www.mangago.zone/read-manga/tomarigi_torch/
http://www.mangago.zone/read-manga/restart_harada/ this one isn't fluff but also not that fucked up
her mangas that are different from her usual aren't typical fluff either
i didn't read all her work (saving it for later xD) so this are the only ones i can remember
also if you haven read these
1. Henai (read it until the end, it's actually comedy, it isn't what is seems like)
2. Henai Maotoko-hen
3. Henai Fumouhen
Yep, by the way is Harada the pioneer of Crazy stuff like this? ლ(´ڡ`ლ)