Any recommendations for dark/sad psychological manga? BL is fine but I'd prefer if there's...

Dark (non yaoi)
http://www.mangago.me/read-manga/ousama_game_renda_hitori/
http://www.mangago.me/read-manga/prison_lab/
http://www.mangago.me/read-manga/infectee/
http://www.mangago.me/read-manga/bastard_hwang_youngchan/

http://www.mangago.me/read-manga/obey_me/
http://www.mangago.me/read-manga/warehouse/
http://www.mangago.me/read-manga/glen/
http://www.mangago.me/read-manga/yahwacheop/
http://www.mangago.me/read-manga/hogu_hagyeongsu/?av=2
http://www.mangago.me/read-manga/dispar_4u/
http://www.mangago.me/read-manga/criminal_interview/
http://www.mangago.me/read-manga/royal_servant/?av=1
http://www.mangago.me/read-manga/tomodachi_game/
http://www.mangago.me/read-manga/false_memories_lee_gpiee/?ePfY
http://www.mangago.me/read-manga/individual_diet_preference/
FOR MORE, FOLLOW ME OR MY LISTS IF YOU WANT!
happy reading!! (*ﾟ▽ﾟ*)

PSYCHOLOGICAL
bl
- http://www.mangago.me/read-manga/moritat/
-  http://www.mangago.me/read-manga/psycho_young_dream/
- http://www.mangago.me/read-manga/obey_me/
- http://www.mangago.me/read-manga/killing_stalking/?av=2
- http://www.mangago.me/read-manga/interview_with_a_murderer/
- http://www.mangago.me/read-manga/cut/

nonbl; little to no romance
- http://www.mangago.me/read-manga/an_uncomfortable_truth/
- http://www.mangago.me/read-manga/save_me/
- http://www.mangago.me/read-manga/bastard_hwang_youngchan/
- http://www.mangago.me/read-manga/suicide_boy/?av=1

hetero
- http://www.mangago.me/read-manga/head_over_heels/

http://www.mangago.me/read-manga/sakura_gari/