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 :

• Love Missile

  Additional 60 HP damage upon all attack.
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Mirror of Shamisen
• Lovely Santa Bag

  A bag that resembles Santa Claus, it emanates faint revitalizing aura. Restores 140 HP and 30 CP at the start of every turn.
• Ramen Shop Lantern
• 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.
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Celestial Wood Raijinco
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Dark Blade

  Increase 2% critical rate and ignore 2% of targets dodge.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Hanagara Dama

  Increase max. CP by 6%
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Scroll: Taiin
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Decorate Battle Umbrella
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.