Dark Repulser

The Dark Repulser is the crystallite sword Lisbeth forged for Kirito in Aincrad: the Black Swordsman's second blade, lighter and quicker than the Elucidator. Like it, it is not a Divine Object: no Priority, no Armament Full Control. Its place is the off hand, where R brings it over the shoulder, and its role is to complete Starburst Stream.

Getting the sword

No recipe or loot yet: the sword is in the Combat tab of the creative inventory, or given with /give @s slimeartonline:dark_repulser.

Stats

Its tooltip: "Forged by Lisbeth from a crystallite ingot. With the Elucidator in hand, [R] draws it into the off hand; holding both, [X] or "Starburst Stream" unleashes sixteen strikes."

Dual wield

1. Put both swords in your hotbar: their scabbards cross in an X on your back.
2. With empty hands, R draws both at once: the Elucidator into the main hand, the Dark Repulser into the off hand, each hand over its own shoulder.
3. Or, with the Elucidator already in hand, R draws the Dark Repulser into the off hand.

Whatever you held in the off hand (a shield, a torch) takes the sword's place in the hotbar; when you sheathe, the sword goes back there and the item returns to your off hand. If you only hold the Dark Repulser in the off hand, R draws the Elucidator into the main hand if it is in the hotbar, otherwise sheathes the off hand. Details: Scabbards and carrying weapons.

On its own, the Dark Repulser is carried and drawn exactly like the Elucidator, diagonally on the back.

Starburst Stream

With both swords in hand — the Elucidator on the right, the Dark Repulser on the left — press X or say "Starburst Stream": sixteen strikes alternating blades, 20 s cooldown. In the off hand, each Dark Repulser strike deals 80% of its own damage (160% for the last one). See Starburst Stream.