Vindictus (Korean: 마비노기 영웅전, Mabinogi Heroes) is a free-to-play hack and slash massive multiplayer online role-playing game created by devCAT, an internal studio of Korean free-to-play game publisher Nexon. Vindictus is a prequel to the popular MMORPG Mabinogi and is known as Mabinogi Heroes outside of North America and Europe. Vindictus takes place in the same setting used in Mabinogi, but is placed chronologically several hundred years prior to the first game during a period of war and strife. Nexon America, Nexon's North American division, announced the new name on March 12, 2010 at the Game Developers' Conference in San Francisco
I saw this and thought it was just like oh so many animes where the guy slashes through another, and is shown kneeling down after the fight.