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 :

• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• 4th Anniversary Back Item

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

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Angel Heart (White)

  16% chance to absorb 2% HP of enemy who attack you.
• Ichimoku Gourd
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• 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.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Falcon
• S52 Gold Dragon Scroll

  Reduce damage taken by 7%. Ignore targets dodge rate by 5%.
• 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%
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Frost Soul Electric Guitar
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.