Yuuki's Jutsu/Weapon's

Name: Taiyou & Tsuki (Sun & Moon)

Rank: S

Owner: Yuuki

Appearance: In his hands

Length: 3 1/2 ft long

Width: 3 1/2 ft wide

Material: Steel center, titanium blades

Weight: To Yuuki they weigh about 13 pounds each.

Abilities: Each Shuriken can channel Yuuki's Chakra, They can be manipulated by Yuuki if thrown without needing strings or wind chakra. They cfan be thrown and directed at great speeds.

Info: These have been Yuukis 2 Melle/Range shurikens for a long time, he always uses them and never goes enywhere without them, they can be used for Melee or be thrown then sent back to Yuuki

Name: Shuriken Surge
Rank: A
Element: Lightning
Description: This Jutsu can be activated on Yuukis Shuriken Weapons, it requires no handseals, only contact with them, Lightning will surge the Shurikens and spin around it and zap through it, it does not hurt Yuuki and can be grabbed by him without being affected, if a enemy is hit while this is on they will be cut and shocked by lightning. This lasts until Yuuki turns it off.

how can it weight a different amount based on who was holding it. On the Sun and Mood weapon.
The jutsu im gonna let go though.