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 :

• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• Hanagara Dama

  Increase max. CP by 6%
• Sanmoku Gourd

  Reduce damage taken by 65.
• Gunbai: Gyoji
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Kettle
• Sakura Lucky Bag

  Increase 3% damage, 4% chance to freeze attackers for 1 turn . Frozen target cannot move but damage taken is reduced by 80%
• S10 Frostguard's Shield

  Shield of the valiant warrior Tundra. Increase agility by 2. Has 17% Chance to stun target when attack with weapon for 1 turn.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• Gunbai: World Peace
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Scroll: Posion Attack
• Civet Cat Tail
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• Clouds And Mist Raijinco