Basically, I'm searching for novels wherein the 'Normal'/'Common' Female Main Character is being targeted/pursued/courted by the Male Romantic Interest whom has 'MC', or 'Hero'-like qualities? A good example is this novel: http://www.novelupdates.com/series/the-hero-suddenly-proposed-to-me-but/ And No Male MC, only FEMALE MCs...
The closest story I can think of would be The Black Knight Who is Stronger than the Hero. I know there are others, but I enjoy this one.
I saw the title and was immediately going to recommend the one you mentioned. There was also a oneshot with a similar premise that i read before. Gimme a few minutes to find it and I'll edit into the post. http://www.novelupdates.com/series/the-hero-and-the-swamp-girl/
Don't know if it is totally dead but this fits the criteria. http://www.novelupdates.com/series/scapegoat-sister-vs-second-prince/
I love this novel! It's a pity that it has so few chapters though... The description says it has only 10 Chapters (The Novel is Complete), but the Translators seemed to have abandoned it... D:
This series isn't exactly like what you want but it's close enough. Main character regards herself as a normal person thrown into a hero's role for no reason and a very special person pursues her. It's only a short story but there is a sequel that will hopefully be translated soon. http://www.novelupdates.com/series/its-because-you-said-there-would-be-candy/
http://www.novelupdates.com/series/genius-doctor-black-belly-miss/ http://www.novelupdates.com/series/...is-wife-the-rebellious-good-for-nothing-miss/ Both male leads have the carisma of a wuxia/xianxia hero
MC in Tensei Shoujo no Rirekisho could be considered a normal or average Japanese School Girl, but in the setting that she's placed, not super normal...and I don't recall a love interest in this novel