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 :

• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Mirror of Thousand Hands
• Heian-kyo Shamisen
• GM Phone

  GM Phone
• GM Goldfish

  GM Goldfish
• Native Drum

  5% chance to convert damage taken to HP positively.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Taurus Wand

  A necromantic wand with a figurehead of a bull. Used by necromancers in ancient times to amplify their power. Recover 100 HP at the start of every turn. Has a 12% chance to absorb 3% HP of enemies who attack you.
• Fairy Wings

  Fairy wings that owned by a fairy
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• War Flag: Syoshin

  Increase mission XP reward by 100.
• Water Symbol Guitar
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• Deadwood Pipa
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Sanmoku Gourd

  Reduce damage taken by 65.
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Ice Cystal Raijinco
• Karasu Miya Falcon

  Increase dodge rate by 6%.
• Blue Pattern Skis
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.