This is a one of the fusion swords paper craft from Final Fantasy VII, it is designed by crisis craft. The Fusion Swords are a six-piece sword assembly wielded by Cloud Strife. The base sword and the others in its set are used by Cloud as his preferred weapon in Final Fantasy VII: Advent Children, the sequel film to Final Fantasy VII, as well as in a handful of spin-off titles. As a set of six swords, the fusion swords come in a variety of shapes and sizes and are thus suited to a variety of combat situations, and can combine to form a single large sword similar in size and function to Cloud's famous Buster Sword. This variety of uses and blades give the swords a wide array of uses by combining and separating different blades to suit the fighter's needs. The First Ken, or First Tsurugi, is the blade that forms the base of the six-piece sword.
The film's creative designer, Takayuki Takaya, has stated the individual swords have no names, and no other names for them have been put forth by the creators other than "fusion swords" which was used during development. Due to a misunderstanding of a transcription of Tetsuya Nomura's words in the DVD commentary, the fully assembled form came to be called First Tsurugi; this was actually in reference to the main blade, and was originally called "ken", not "tsurugi".
You can download this papercraft from here: Final Fantasy VII - Fusion Sword: First Ken Free Papercraft Download