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 :

• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Raijin Raijinco
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Force of Taotie

  Reduce damage taken by 7%.
• Firefox Tail
• Hanagara Hagoita

  Increase max. HP by 3%.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• Giant Copper Coins

  Increase Mission gold reward by 30%.(Mission Only)
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.
• Lucky Chess

  Has 5% chance to freeze enemy who attacks user (3 turn). Frozen target cannot move but damage taken is reduced by 80%. Each turn recover 100 HP and 100 CP.
• Champion Cup!

  Ultimate prize for Champions.
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Blue Wolf Tail
• Scroll: Sun of Campaign
• War Flag: Syoshin

  Increase mission XP reward by 100.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Ice Cystal Raijinco
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.