You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• Dark Plate Twin Blades
• Hanami Folding Fan

  2011 Hanami Festival - Usagi! Increase dodge rate and critical rate by 3%.
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Ishiyama Lantern

  Reduce damage taken by 49.
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Toxic Village Poison Potion
• Sealing the soul barrel
• Decorate Battle Umbrella
• Scroll: Terminated Rock
• Lovely Santa Bag

  A bag that resembles Santa Claus, it emanates faint revitalizing aura. Restores 140 HP and 30 CP at the start of every turn.
• Thorn hammer
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Gunbai: Gyoji
• Scroll: Guren
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• Shigu Twin Blades
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Golden Torch of Zeus

  Recover 150 HP every turn
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Deadwood Pipa
• Scroll: Genbu
• Colorful Snowflake

  Increase agility by 1. Has 15% chance to freeze enemy who attacks user (2 turns). Frozen target cannot move but damage taken is reduced by 80%.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)