does it have to be a manga? If not then :
Read these two in this specific order, tho not a sequel they're kinda connected, also don't be put off by the art at the start, it changes for the better in just a few chapters :
Song of Reverberation
https://www.mangago.zone/read-manga/song_of_reverberation/
The Promise
https://www.mangago.zone/read-manga/the_promise/
also -
https://www.mangago.zone/home/mangalist/2758080/
i don't read manga as much as manhwas and the ones i do are all of different genres, also i haven't read the one you're talking about but I guess I can still rec some of my favs:
Yoake no Uta - interesting plot
https://www.mangago.zone/read-manga/yoake_no_uta/
Kami no Fune de Nemuru - interesting plot
https://www.mangago.zone/read-manga/kami_no_fune_de_nemuru/
Harenai Sekai de Kimi Dake Mieru - cute love plus past trauma
https://www.mangago.zone/read-manga/harenai_sekai_de_kimi_dake_mieru/
Kyonyuu Suki nanoni BL Kai ni Tensei Shimashita - comedy
https://www.mangago.zone/read-manga/kyonyuu_suki_nanoni_bl_kai_ni_tensei_shimashita/
Makitakun No Koiji wo Jamasuru To Shinu - comedy
https://www.mangago.zone/read-manga/makitakun_no_koiji_wo_jamasuru_to_shinu/
Kansai Jin to Hukumen Satsujinki - comedy
https://www.mangago.zone/read-manga/kansai_jin_to_hukuman_satsujinki/
ah damn well maybe this is a sign for you to hop onto manhwas and manhuas?
I used to avoid mangas like a plague cause I had this notion (still do to some extent) that they're too much work yk cause reading right to left thing and then I need to zoom in every panel cause i wanna see the art well but now I've come to like reading them cause of how many gems I've found that i had missed out on before and there's still so many more left!!
basically, give manhwas a chance like I gave mangas a chance (ʃƪ^3^)
Rec me mangas like vassalord in terms of vibes,art and having a strong story and bl
I'm not looking for like specific vampire stuff just same vibes and having a good story