Cobra: The Space Pirate

Cobra is a notorious Space Pirate with a laser gun as his left arm. But, he was tired of being chased by the agency in space and decided to lead a regular life by changing his face & being wiped of his memory. Three years later, he is a regular person leading a regular life. He is tired of his lifestyle. For fun, he goes to see a "Trip Movie" that allows him to see the dream of his choice. When he saw his "dream", he saw his memories of when he was the notorious Space Pirate Cobra. However, he didn't know that was his memories. As he is going home, he meets up with someone who had a grudge with him. There is a little scuffle, and learns that he actually has a laser gun on his left hand.

An invitation was sent from a mysterious man to the soldiers. The objective was to take back Shiba Castle. This was the castle that belonged to the Sheba clan and fell into the hands of the Chaos Army 20 years ago. The twelve soldiers that were assembled received along with the invitation, a playing card as if to resemble them to the spade knights who served the Shiba Castle. However, they were ambushed and the ones that were left were "Seven" and "Eight" the robots with two brains, "Jack" the one with the strongest shield, "Queen" the beautiful assassin and finally, Cobra who was holding the "Ace." They were heading towards the port town of Gizara, in order to rescue "King" who was their only key to succeeding in sneaking into Shiba Castle. (Source: Creek & River)

A man with a psychogun on his left arm... His name is Cobra. Men fear him, women love him, and he is a Space Pirate that travels the universe. The latest episode of a timeless hero that first appeared over 40 years ago is about to begin! (Source: Kadokawa, translated)