how about "the gladiator" by Liv ? well it's seldom update but the story is great. here the link n sinopsis
www.dokuga.com/fanfiction/story/9518/1
Born into royalty as a young child, Sesshomaru’s
territory comes under attack, his entire family and
people slaughtered, leaving him the sole survivor
of the Western lands. Sold into slavery,
Sesshomaru grows up to become a gladiator,
strong and unfeeling…until he laid eyes on her.
The daughter of one of the city’s leaders, Kagome
is beautiful, kind and full of light, but when she
catches the eye of a ruthless politician Naraku,
the one responsible for the murder of
Sesshomaru’s family, can she be saved by the
handsome gladiator whose golden eyes pierce
through her soul and whom her heart yearns for?
Inspired by the movie Pompeii. Rated MA for
graphic violence and other adult-themes.