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Strange hidden effect visible only through visual bug
On the Oni's new skin for the Fire Moon Festival collection, the armor has impressions of dots connected by lines across the armor, reminiscent of constellations. These markings glow red when the Oni enters blood fury, giving an awesome effect, however, through a bug in the cosmetic store menu, I was able to view the Oni's new skin with blood fury effects while in the normal stance. This allowed me to see the Oni holding its sword while in blood fury mode, which is normally impossible since it disappears so he can equip the kanabō. The interesting thing I noticed was that, unlike every other sword (which I tested with the bug to make sure), the new Celestial Kanabo sword actually has a unique effect applied to it for blood fury mode, despite never being possible to see. It's even stranger that the sword lacks the connected dots pattern that's on the armor, but still has the connected dots glow.
This is the sword normally
This is the sword with the unique blood fury graphic, which is normally impossible to see without this store bug
Side note: The sword skin is called 'Celestial Kanabo', and is also referred to as a kanabō in its description, but a kanabō is nothing like a sword. A kanabō is a large, studded bat that was used to crush armor. What's even stranger about the mislabeling of a sword as a bat is that the Oni already uses a kanabō, being the weapon he uses to instantly down survivors in blood fury. Is it possible there's a connection between the sword's unique blood fury graphic and its mislabeling as a kanabō?