Hey guys anyone have some mangas about a kind hero with a tragic past? I'm in the mood to ...

Any genre? I could suggest D. Gray Man - Allan Walker is a real cutie in this ... but it is not a romance manga, it is action/supernatural.

Any genre is fine, thanks! I just needed to read a story with a really good hero :)

Ah, thought of another one ... Hakkenden ... (also an anime)

hmm...
You've hit one of my favorite genres/tropes! I have a list for this genre (but it's pretty small at the moment so I'll just post the link to my favorites on the list).

1. My absolute favorite, the pinnacle of anti-hero manga: http://www.mangago.me/read-manga/ubel_blatt/

2. The main character isn't so much a hero as a heroine but the tragic past is all there (plus, it's just a great series!):
http://www.mangago.me/read-manga/basara/

And then here's the list if you want to see more (hopefully, I'll have added more by then!)
http://www.mangago.me/home/mangalist/39708/