Sadistic personality Light
http://www.mangago.me/read-manga/miwaku_shikake_amai_wana/
Sadistic personality
http://www.mangago.me/read-manga/risou_no_koibito/
And kinda this one's nature
http://www.mangago.me/read-manga/totally_captivated/
╮( ̄▽ ̄)╭
http://www.mangago.me/read-manga/kichiku_megane/ seme has split personality and he's pretty sadistic
Ooooh fun
http://www.mangago.me/read-manga/datte_maou_sama_wa_kare_ga_kirai/ it's funny demon king vs hero and let's just say the demon king uke is the sweeter one lol
http://www.mangago.me/read-manga/kawaii_akuma/ crazy yandere surprise played for laughs but seme has interesting ideas about consent
http://www.mangago.me/read-manga/otona_keikenchi/
http://www.mangago.me/read-manga/scandalous_seiryo_university/ again it's light
http://www.mangago.me/read-manga/madness/ ok he's kinda axe-crazy
http://www.mangago.me/read-manga/kichiku_encount/
http://www.mangago.me/read-manga/kohitsuji_project/ vampire shounen ai
http://www.mangago.me/read-manga/aitsu_no_daihonmei/ shounen ai but sweet and funny, seme is sadistic but it's stuff like giving uke chocolate with habenero peppers as a joke
http://www.mangago.me/read-manga/ai_to_yokubou_wa_gakuen_de/ lots of couples at least two are sadistic, ones just nuts but again it's mostly played for laughs
http://www.mangago.me/read-manga/sick/ bully
http://www.mangago.me/read-manga/yume_no_you_na_hanashi/ more sadistic in a kinky way but not disturbing
Most of these are played for laughs if you want heavier there's 10 count, viewfinder, scarlet , Sakura gari...
Okane ga nai has super possessive seme, non consent and the uke is super feminine but it's pretty popular
Hua hua you long has pretty sadistic, there's a novel too but it's soo twisted and feng yu I jiu tian has a novel as well that's super long and it's amazing
Can anybody recommend manga with good art that has a semester split personality or Sadistic nature (づ ̄ ³ ̄)づ