Vassal Projectile

The Vassal Projectile or Seven Star Projectile, also known as the Projectile Spirit of the Vassal Weapon. The spirit is from another world prior to being summoned to another world, the Vassal Projectile is one of the eight Vassal Weapons present in the world which Naofumi currently resides in. The candidates of the weapon have been given the title of Projectile Hero, whom they are generally addressed as so by the locals. The current candidate of the Vassal Projectile is Rishia Ivyred.

Overview
The Vassal Projectile was first seen when Rishia confronted the delusional Itsuki. While Itsuki had a curse series and the Legendary Bow, Rishia held her own. Proving her worth, a shadow of the Vassal Projectile manifested from the Legendary Bow and chose Rishia as its wielder. However, this was only an avatar of the true Vassal Projectile since the true weapon had been stolen by Takt. As a result, Rishia's weapon had a semi-transparent, wavering form and she did not have its full power.

During Takt's conquest of Raphtalia's World, he obtained 7 of the 8 Vassal Weapons but was not proficient in any of them. He was eventually defeated and the stolen Vassal Weapons were released. Rishia then obtained the true form of the Vassal Projectile.

Power-up Method
The power-up method for the Vassal Projectile is the "Enhanced Customization via Money." This power-up method consumes money to either enhance the user or cancels out a failure from another power-up method.

Trivia

 * The Vassal Projectile manifested itself out of the Legendary Bow.