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 :

• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• Scroll: Red Curse seal
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• Three-stringed Lute Guitar
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Balloon Rabbit Doll

  Has 8% chance to convert damage taken to HP positively.
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.
• Christmas Deer

  Increase critical chance 2% and critical damage 6%.
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• Scroll: Genbu
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Super Rabbit Doll

  Increase damage by 9%.
• Spirit Flag

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

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• Green Koi
• 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.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Shadow Twin Blades
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Ferret Tail
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• Iron Tortoise Shell

  Reduce damage taken by 200.