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 :

• S24 Junsei Ring

  Increase max. HP by 5%.
• Flame Soul Electric Guitar
• Ramen Shop Lantern
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• Mirror of Shamisen
• Ichimoku Gourd
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Hidden Green Umbrella
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Green Koi
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• 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.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Butterfly Wings
• Dark World Hammer
• Decorative Rope
• S47 Kami's Blessing

  Increase critical chance 6% and critical damage 10%.
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• Large Wooden Hammer
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.