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 :

• Screw Pattern Skis
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Basic Jounin Battle Gear
• Folding Fan: Shino
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Mirror of Shamisen
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• Blue Cloud Umbrella

  Ignore 6% targets dodge.
• Scroll: Grassland
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Black Koi
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• Colorful Snowflake

  Increase agility by 1. Has 15% chance to freeze enemy who attacks user (2 turns). Frozen target cannot move but damage taken is reduced by 80%.
• Scroll: Red Curse seal
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Father's Heart

  Reduce damage taken by 6%.
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Wooden Hammer
• Banana Back Item

  Banana Back Item
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.