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 :

• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• Blue Bird Wings
• Thorn hammer
• Musashi Twin Blades
• Paper Windmill

  Additional 20 HP damage upon all attack.
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Shadow Twin Blades
• Green Koi
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• Blue Shell
• Village Red Lantern
• Ninja Bag

  Increase healing power of scrolls by 20%.
• Red Shell
• Father's Heart

  Reduce damage taken by 6%.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Roasted Turkey

  Restore 20 HP every turn.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Curved Spear
• War Flag: Furinkazan
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Red Shuriken Skis
• Light Cry Raijinco