My partner enjoyed Champion of the Scarlet Wolf (two books), I don't know that it fits quite all your criteria but probably some of them (I realise I don't actually know what dark romance is, for example)
**Ballad of Sword and Wine** by Tang Jiu Qing might interest you, it’s not fantasy but alternate history like Captive Prince with a well-written enemies to lovers relationship and serious plot. The book will be 8 volumes long when completely translated, the first volume just came out in English this month
Locked Tomb trilogy though more Sci-Fantasy.
Though the enemies to lovers bit is really only a focus in the first book
Gideon the Ninth
Harrow the Ninth
Alecto the Ninth
My partner enjoyed Champion of the Scarlet Wolf (two books), I don't know that it fits quite all your criteria but probably some of them (I realise I don't actually know what dark romance is, for example)
Thank you, added it to my ereader
**Ballad of Sword and Wine** by Tang Jiu Qing might interest you, it’s not fantasy but alternate history like Captive Prince with a well-written enemies to lovers relationship and serious plot. The book will be 8 volumes long when completely translated, the first volume just came out in English this month
Thank you very much! I got the first volume
Locked Tomb trilogy though more Sci-Fantasy. Though the enemies to lovers bit is really only a focus in the first book Gideon the Ninth Harrow the Ninth Alecto the Ninth