A 'shuriken' (手裏剣), which translates into "hidden-in-hand blade", is a traditional Japanese concealed weapon that was generally used for throwing, and sometimes stabbing or slashing an opponent's arteries.
This card's name may be a reference to a real-life 16th century ninja, Fūma Kotarō who is also the character "Getsu Fuhma" based on.
This card's artwork is taken from Yu-Gi-Oh! Duelist Duel 81: "The Broken Bond", specifically from the panel where Black Ninja attacks and destroys Dark Eye Stalker. However, the shuriken in this card's artwork are added in.