I am looking a Manga About slaves with good romance relatinships.

[shaxa]

help me please

 

[kasajizo]

Not really hit the mark, but you can try to read katabami to ougon I suppose.

 

[YumGumYum]

https://mangadex.org/title/25495/maou-no-ore-ga-dorei-elf-wo-yome-ni-shitanda-ga-dou-medereba-ii

 

[ryouhira]

Tate no yuusha nariagari