A monster often seen in the waters surrounding Tetsusan Island. Taking the form of kelp, it is known to attack various ocean lifeforms, and grows by ingesting the weapons it finds in sunken shipwrecks. Years prior, islanders gathered their coin to hire a band of skyfarers, hoping to vanquish the monster once and for all. Though the skyfarers nearly defeated it, a part of the fiend escaped back into the ocean, where it grew to be enormous. After swallowing the demon blade Nagi, its ferocity increased. It is thought that no typical skyfarer is capable of defeating it.
