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 :

• Shadow Twin Blades
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Curved Spear
• Spiked Blade

  Increases dodge and critical chance by 4%. Recovers 70 HP each turn.
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• Gunbai: World Peace
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Ramen Shop Lantern
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Sakon Three Blades
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Scroll: Kochin
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Shadow Umbrella
• Purple Mixing Yellow Umbrella
• Flag of the Burning Legion

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

  Restores HP by 3% and CP by 99 each turn.
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP