Vassal Sewing Set

The Vassal Sewing Set is presumed to be one of the Vassal Weapons from S'yne's World. The person who possesses the weapon is called the Sewing Set Hero. The sewing set holds a purple gem which can absorb materials and the ability to transform. The current Sewing Set Hero is S'yne Lokk.

Overview
The first known wielder of the Vassal Sewing Kit is R'yne who helped Mamoru in the ancient past of Raphtalia's World. She used it to great effect with her skywing abilities and even taught S'yne how to better use her abilities.

In the modern day, the current wielder is S'yne Lokk, a refugee from a destroyed world. Since the weapon's home world was destroyed, the Vassal Sewing Set is slowly losing power until it will finally be destroyed. However, since Naofumi has communed with the spirit of the Legendary Shield, the Shield has offered to provide power to the Vassal Sewing Set to mitigate further deterioration. S'yne's Sister also modified the "energy transfer" of the weapon to prevent further deterioration. After her world was destroyed, S'yne travelled across various worlds until she came across Naofumi and defeated the otherworld invaders. She plans to help Naofumi and use the Vassal Sewing Kit to get revenge on those who destroyed her world.

Power-up Method
The power-up method for the Vassal Sewing Set is unknown.

Trivia

 * The Vassal Sewing Set is Light Novel Exclusive.