psychological manga

Sachiiro no one room (doesnt include the tag tho)
Save me
Sweet home
Bastard
My fiance is in love with my little sister (prepare some tissues)
Prison lab
Sekai oni
Dice
Talentless nana
Ghost teller pls its rlly good
Battle in 5 seconds after meeting
The moon is beautiful tonight but first die

Secret Alliance
Yakusoku no Neverland
Pumpkin night
Watashi no Tadashii Onii-chan

http://www.mangago.me/read-manga/chi_no_wadachi/
http://www.mangago.me/read-manga/bakemono_recchan/
http://www.mangago.me/read-manga/boku_mushi/
http://www.mangago.me/read-manga/paperakyu/
http://www.mangago.me/read-manga/oyasumi_punpun/
http://www.mangago.me/read-manga/ichi_the_killer/
http://www.mangago.me/read-manga/homunculus/

you should read "brutal: Satsujin Kansatsukan no Kokuhaku", it's so satisfying istg