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 :

• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• Super Rabbit Doll

  Increase damage by 9%.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Firefox Tail
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Sand Gourd
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• 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.
• Ferret Tail
• Scroll: Posion Attack
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• 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.
• Flag of the Burning Legion

  Reduce 3% damage taken and 12% chance to absorb 2% HP of enemy who attack you.
• Mirror of Shamisen