Does this manga have a novel ?

Yes

What is it's name ?

What is this manhwa's name?

Oh ok m'en in harem, well I saw it in naver

Oh ok men in harem, well I saw it in naver

I think you can find it by typping on Google "men in harem novel naver"

Thank you but is there any site where I can read it for free in english

Isn't it free in naver ? I was able to read remarried empress the novel on naver without paying anything