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 :

• Raccoon Tail
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Sakon Three Blades
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Light Cry Raijinco
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Aries Taiko

  A magical taiko used in celebrations during the Aries zodiac months. Recovers 50 HP every turn and reduces damage taken by 25.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Folding Paper Fan
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Hidden Green Umbrella
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• Angel Heart (White)

  16% chance to absorb 2% HP of enemy who attack you.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Master Scroll

  Restores HP & CP by 3%.
• Ferret Tail
• Businessman Luggage
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Beast Mace
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• Native Drum

  5% chance to convert damage taken to HP positively.