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 :

• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Orange Kikyo Skis
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• Leopard Cat Tail
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Green Koi
• Butterfly Wings
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Flame Soul Electric Guitar
• Snowflake

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

  Increase healing power of scrolls by 20%.
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.
• Christmas Treasure Bag

  Increase agility by 1.
• S5 Possessed Koto

  Increase purify chance by 7%. Reduce jutsu CP consumption for 10%. Has 15% Chance to stun target when attack with weapon for 1 turn.
• S47 Kami's Blessing

  Increase critical chance 6% and critical damage 10%.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Ice Cystal Raijinco
• S83 Four Wings

  Increase dodge rate by 8%.
• Scroll: Taiin
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Beast Mace
• 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.