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 :

• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Deadwood Pipa
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• GM back item
• 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.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Blue Bird Wings
• Roasted Turkey

  Restore 20 HP every turn.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Twins Sakura

  Ignore 5% targets dodge.
• Samurai Painted Wood

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• Angel Heart (White)

  16% chance to absorb 2% HP of enemy who attack you.
• Thanksgiving Balloons

  Increase max. HP by 2%.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.