The 3000 Realm Ark and the Sea Abyss/Bonus
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Upgrade Ringing Abyss Weapons to Echoing Abyss Weapons[edit]
Each weapon can be upgraded after Chapter 4 with an associated crest. Each crest requires defeating a certain horror.
Sheila AS Personal Weapon[edit]
After collecting 50 T. Black Pearls from Sea of Ice (Another Dungeon), collect the Dragon Palace Diamond from the Award. Then head to the blacksmith in Siren's Village. Talk to the siren standing next to the blacksmith to upgrade Otohime’s Trident to Otohime's Trident: Top Rank with the pearls and diamond.
Sheila AS True VC Grasta[edit]
You must defeat Ishmaelithan which requires Royal Decree Whelk. The Royal Decree Whelk is given from the Catch Queen by exchanging Choral Shell and Resonant Jewel which in turn require all of the harpoon fishing treasures.
