Centuria is a Manga in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.centuriamangafree.com fastest updating comic site. The Summary is

Stowing himself away on a slave ship, Julian sets sail for the great continent with a hundred slaves, all yearning for freedom, until…?! Embark on a groundbreaking journey through this action-packed dark fantasy saga!!(Source: MANGA Plus)