Hiithere

https://www.mangago.me/read-manga/dreadful_night/
https://www.mangago.me/read-manga/black_mirror/
https://www.mangago.me/read-manga/dead_man_switch/
https://www.mangago.me/read-manga/madk/

https://www.mangago.me/read-manga/pigpen/
https://www.mangago.me/read-manga/survive_romance/
https://www.mangago.me/read-manga/ghost_teller/
https://www.mangago.me/read-manga/bastard_hwang_youngchan/
https://www.mangago.me/read-manga/tales_of_the_unusual/
https://www.mangago.me/read-manga/prey_1/
https://www.mangago.me/read-manga/distant_sky/
https://www.mangago.me/read-manga/dead_life/
https://www.mangago.me/read-manga/blood_and_butterflies/
https://www.mangago.me/read-manga/one_day_suddenly_seoul_is/
https://www.mangago.me/read-manga/look_alike_daughter/
https://www.mangago.me/read-manga/witch_s_judgment_is_to_be_turned_into_a_flower/
https://www.mangago.me/read-manga/a_ghostly_song/
https://www.mangago.me/read-manga/ghost_story_club_remake/
https://www.mangago.me/read-manga/my_girlfriend/
https://www.mangago.me/read-manga/paradise_on_earth/
https://www.mangago.me/read-manga/an_uncomfortable_truth/
https://www.mangago.me/read-manga/efforts_never_betray/
https://www.mangago.me/read-manga/unhinged/
https://www.mangago.me/read-manga/monster_child/
https://www.mangago.me/read-manga/about_death/
https://www.mangago.me/read-manga/dead_flowers_dami_zetson/
https://www.mangago.me/read-manga/afterschool_war_activities/
https://www.mangago.me/read-manga/the_planet_walks_alone/
https://www.mangago.me/read-manga/the_horizon/
https://www.mangago.me/read-manga/i_have_something_to_tell_you/
https://www.mangago.me/read-manga/mosquito_war/
https://www.mangago.me/read-manga/mode_ii/

Have you read any of these?

Currently reading "For Your Murder" and have read "340 days." They're really good and mainly psychological with a pint of romance, not horror but one was borderline thriller if you're into that.

Sleeping dead

A ghostly song
Paradise on earth
Brutal: Satsujin Kansatsukan no Kokuhaku