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 :

• Blue Shell
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• Scroll: Rikugo
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• Firefox Tail
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• Roasted Turkey

  Restore 20 HP every turn.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Orange Koi
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Scroll: Kinjutsu I
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• Folding Paper Fan
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Fire Symbol Guitar
• Heian-kyo Shamisen
• Shadow Umbrella
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Dark Plate Twin Blades