Manga with the most badass MC ever? Bonus if it's a complete manga and the MC is a hot guy

The mc from Black Cat is badass, and he's hot/cute + it's completed! ;P (Buuut he can also be a derp lol, so I wouldn't say he's the most badass, just one of the many badass mc's out there.)
http://www.mangago.me/read-manga/black_cat/

http://www.mangago.me/read-manga/blind_faith_descent/
http://www.mangago.me/read-manga/mang_huang_ji/
http://www.mangago.me/read-manga/doulou_dalu/
http://www.mangago.me/read-manga/the_new_gate/
http://www.mangago.me/read-manga/wizardly_tower/
http://www.mangago.me/read-manga/id/

9 Banme no Musashi, please read it

The actual romance doesnt start until anfew chapters in but its sooooooo good