I want to read some yaoi/ shounen ai that has some apocalyptic setting. Like omniscient re...

https://www.mangago.me/read-manga/how_to_survive_as_a_player/
https://www.mangago.me/read-manga/the_hunter_s_gonna_lay_low/
https://www.mangago.me/read-manga/dreadful_night/

or just search "guideverse" many will popup it's apocalyptic yaoi genre

https://www.mangago.me/read-manga/death_delayed_for_a_short_time_because_of_the_will/
https://www.mangago.me/read-manga/guiding_hazard/
https://www.mangago.me/read-manga/dead_man_switch/
https://www.mangago.me/read-manga/dear_00/ (currently on indefinite hiatus)

zombie / apocalypse bl

Webtoons/manhwas/huas:
https://www.mangago.me/read-manga/the_last_zombie/
https://www.mangago.me/read-manga/rainbow_city/
https://www.mangago.me/read-manga/radio_storm/
https://www.mangago.me/read-manga/believe_my_sign/
https://www.mangago.me/read-manga/over_the_paradise/
https://www.mangago.me/read-manga/monster_in_the_mist/
https://www.mangago.me/read-manga/a_room_without_space_side_story_1/
https://www.mangago.me/read-manga/the_hounds_of_sisyphus/
https://www.mangago.me/read-manga/corrosive/
https://www.mangago.me/read-manga/a_dead_crow_s_stare/

Mangas:
https://www.mangago.me/read-manga/undead_tsuyuhisa_fumi/
https://www.mangago.me/read-manga/boys_of_the_dead/
https://www.mangago.me/read-manga/zombie_hide_sex/

Here you go dear enjoy!

Thank youszz