More plot focused than romance focused.
Not sure what exactly you mean by neogothic, but maybe you'd like this?
https://www.mangago.zone/read-manga/drcl_midnight_children/
Yeah he's an incredible mangaka. Maybe try Tanabe Gou's works? He does adaptations of H.P. Lovecrafts books:
https://www.mangago.zone/read-manga/h_p_lovecraft_s_the_call_of_cthulhu/
It's not what I'd describe as gothic though. A more fitting manga would be Vampire Hunter D:
https://www.mangago.zone/read-manga/vampire_hunter_d/
I've read 10 years I loved you the most and some popular angst stuff, I need some other recommendations, it could be bl,gl or even straight.
https://www.mangago.zone/home/mangalist/842448/
You can try these~
hana haru (seokwoo), straight
living will, gl
the horizon, no romance
faraway home, bl
incidentally living together, bl smutty but real depressing
https://www.mangago.zone/home/mangalist/1750995/