Yet another fragment of the Totsuka-no-Tsurugi.
The Heavenly Tail Feather belonged to four Deities, with four fragments in total, likely distinguished by the names of past Masters, the one held by Kamiya designated to the deity abiding on the high days of late arrival, costly and rooted.
The current hilt part, under the ownership of Susanoo.
It making an appearance in Marine Country is also reasonable and appropriate.
If he could acquire this piece, then Kamiyagawa would essentially possess half of the Totsuka-no-Tsurugi.
Perhaps one day in the future, he might truly be able to assemble a complete Divine Artifact.
"Before reality and illusion in Marine Country revert to normal, you cannot take anything from here. You can first store this fragment of Heavenly Tail Feather with Crab Master. I have watched him for eight hundred years; he is a maritime progeny worthy of trust," said Dai Gyo Tou Rou.