https://www.mangago.zone/read-manga/bitten_by_moonlight/
It has a vampire not sure if it matches all else
https://www.mangago.zone/read-manga/sangyang_the_wanderer/
AHHHHH STEP SIDE EVERYONE pookie you must read this I would say the art style is pretty Gothic
https://www.mangago.zone/read-manga/madk/
Tw for like, everything tho
https://www.mangago.zone/read-manga/smoky_nectar/
https://www.mangago.zone/read-manga/smoky_nectar_renew/
https://www.mangago.zone/read-manga/red_beryl_ni_sayonara/
https://www.mangago.zone/read-manga/bite_marks_and_fluorite/
https://www.mangago.zone/read-manga/bloody_mary_samamiya_akaza/ (this one is lowkey bl, like bromance, but it's so good)
https://www.mangago.zone/read-manga/kishukusha_no_kuroneko_wa_yoru_wo_shiranai/
https://www.mangago.zone/read-manga/shitsuke_ga_nattenai/
https://www.mangago.zone/read-manga/dreaming_vampire/
https://www.mangago.zone/read-manga/gomidame_no_garnet_team_hazama/
https://www.mangago.zone/read-manga/captivated_by_the_moonlight/
https://www.mangago.zone/read-manga/boku_no_chisuitte_kuremasen_ka
WHERE ARE THEY??? I NEED A GOTHIC PARTNERS GETTING MARRIED IN A SIMILAR PLACE LIKE St. Johann Nepomuk church