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 :

• Scroll: Terminated Rock
• Yatai Lantern
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• 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.
• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Banana Back Item

  Banana Back Item
• Colorful Snowflake

  Increase agility by 1. Has 15% chance to freeze enemy who attacks user (2 turns). Frozen target cannot move but damage taken is reduced by 80%.
• S2 Solar Aura

  Increase agility by 3 and accuracy by 7% .
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• 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.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• Toxic Village Poison Potion
• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Swordfish
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• Red Koi
• Ritual Taiko
• Chakra Message Stick