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 :

• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Falcon
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Scroll: Kochin
• 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%
• Tail Hunter Back Item

  Increase max. HP by 3%.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• White Metal Hammer
• Sakura Rain Battle Umbrella
• Gunbai: World Peace
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Blue Pattern Skis
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Scroll: Taiin
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• Heian-kyo Shamisen
• Mini Octopus
• Carp Flag
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Dark Plate Twin Blades
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.