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 :

• Puppet: Spider
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• Turkey Tail
• Scroll: Messenger

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Raijin Raijinco
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• Mini Goldfish
• Hide Guitar
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• GM Goldfish

  GM Goldfish
• Steel Frame Tail
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Scroll: Kinjutsu I
• Toxic Village Poison Potion
• Love Ribbon

  Additional 40 HP damage upon all attack.
• Blue Bird Wings
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S12 Ancient Blood Evil Gourd

  Increase max. HP by 5%. But reduce Max.CP by 1%.