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 :

• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Ritual Taiko
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Tail Hunter Back Item

  Increase max. HP by 3%.
• Christmas Treasure Bag

  Increase agility by 1.
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Love Ribbon

  Additional 40 HP damage upon all attack.
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• Beast Mace
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Successor Fan

  Restores HP & CP by 2%. Has 7% chance to freeze enemy who attacks user (2 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Puppet: Spider
• Death Wooden Coffin
• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Hidden Green Umbrella
• Karasu Miya Falcon

  Increase dodge rate by 6%.
• Banana Back Item

  Banana Back Item
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.