Infinite Blade

Infinite Blade (インフィニティブレード) is a manga series by KEN+. It was serialized in Comic Valkyrie.

Plot
Lulu (Lucius Lucent) is a cold blooded female warrior that makes men in battlefields quiver in fear. Along with her magical armor, Gil, she destroys everything in her path with her overwhelming power… A dark fantasy with an epic setting and a speedy storyline!