https://www.mangago.zone/read-manga/look_alike_daughter/
https://www.mangago.zone/read-manga/survive_romance/
https://www.mangago.zone/read-manga/night_of_shadows/
https://www.mangago.zone/read-manga/pyramid_game/
https://www.mangago.zone/read-manga/suicide_notes_laid_on_the_table/
https://www.mangago.zone/read-manga/american_ghost_jack/
https://www.mangago.zone/read-manga/monster_child/
https://www.mangago.zone/read-manga/the_tale_of_goldiluck_the_black_kitten/
https://www.mangago.zone/read-manga/fukigen_na_mononokean/
https://www.mangago.zone/read-manga/blue_giant/
https://www.mangago.zone/read-manga/the_witch_and_the_beast/
https://www.mangago.zone/read-manga/atarashii_ashi_de_kakenukero/
https://www.mangago.zone/read-manga/trump_hamaguri/
https://www.mangago.zone/read-manga/apocalypse_no_toride/
https://www.mangago.zone/read-manga/reiri/
https://www.mangago.zone/read-manga/the_walking_cat_a_cats_eye_view_of_the_zombie_apocalypse/
Have you read any of these?
unique stories w/o romance