Try looking up a video of the DS game, that add in some cool stuff, The characters has running animations, and the ninja could hold two weapons. (This was before dual blades came out. XD) Though, I think they can attack as they move. --- Be part of the answer, not part of the problem.
Maplestory DS had its own unique independent story, and was completely separate from the MMO. Skills/Weapons names/effects/level requirements won't necessarily match with the MMO --- Train Heartnet, Jio Freed, Tsuna Sawada: To Protect In Their Beliefs, To Protect Humanity, To Protect their Friends. These are true heroes.