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 :

• Vertical Light

  Reduce 15 HP damage taken.
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• Sakura Lucky Bag

  Increase 3% damage, 4% chance to freeze attackers for 1 turn . Frozen target cannot move but damage taken is reduced by 80%
• Flame Blade Raijinco
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Mech of Wing

  Reduce damage taken by 10%.
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Writing Brush
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Flag of the Burning Legion

  Reduce 3% damage taken and 12% chance to absorb 2% HP of enemy who attack you.
• Gunbai: Gyoji
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• Water Shark Skis
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Scroll: Genbu
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Turkey Tail
• Ultimate Taiko

  Recover 120 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Ghost Spider

  Reduce 72 HP damage taken.
• Python Scales Raijinco
• Vampire Cloak

  Increase healing power of scrolls by 100.