Duet Night Abyss

Version 1.6: Paradise's 22nd White Bunny is the current Duet Night Abyss version. It went live on September 8, 2026 after maintenance that ran from 08:00 to 15:00 UTC+8.

The update adds the Pyro character Falsi, who is proficient with Dual Blades and Dual Pistols and can be obtained free through in-game progression or purchased directly.

Mount Arcano is the new explorable region and covers three connected areas: Arcano, Arcano Ruins, and the Mount Arcano Rift. Story content continues with Twilight Arc Chapter 2 and additional side stories.

Three new weapons arrive with the version: the Dual Blades Stifled Howl, the Whipblade Sanguis Sanctus, and the Calamity Dual Pistols Sanguine Plume, which becomes available on September 29 at 10:00.

Version activities include Parade Itinerary, Immersive Theatre with Falsi through September 29, Way of the Penitent through October 19, Treasure Hunt Trials, and further co-op and challenge events. The update also adds new character and weapon Demon Wedges, adjusts how certain blueprints are obtained, and rotates Covert Commission rewards to include Secret Letter: Falsi and Secret Letter: Stifled Howl.

Duet Night Abyss takes place on Atlasia, a continent where magic and machinery coexist. Its story is told through two protagonists with different backgrounds whose journeys gradually intersect as they investigate conflicts surrounding the shape-shifting Demons of a Hundred Faces.

One side of the narrative follows the customizable Phoxhunter, whose default identity can be Vita or Mors depending on player selection. After an imperial invasion separates the protagonist from home and childhood friend Berenica, the Phoxhunter is drawn into Icelake and the wider conflicts of Atlasia.

Combat combines hack-and-slash melee attacks with third-person shooting. Characters can equip both a melee weapon and a ranged weapon and switch between them freely during combat, allowing players to combine close-range combos, gunfire, abilities, aerial attacks, and movement skills.

Helix Leap is the game's signature aerial traversal mechanic. It allows characters to move quickly through three-dimensional environments and connect ground movement with airborne combat.

Weapon categories include Swords, Katanas, Dual Blades, Whipblades, Greatswords, Polearms, Pistols, Dual Pistols, Shotguns, Assault Rifles, Sniper Rifles, Grenade Launchers, Crossbows, and other specialized weapons. Individual characters have weapon proficiencies but are not limited to a single fixed combat style.

Demon Wedges function as the central build-modification system. Character and weapon Wedges alter statistics, skill behavior, movement, elemental interactions, and other combat properties, while Golden blueprints support higher-level build development.

Unlike a traditional character gacha RPG, Duet Night Abyss makes playable characters and weapons obtainable through gameplay. Character fragments and weapon materials are earned through systems such as Secret Letters, Immersive Theatre, Nocturnal Echoes, Forging, Memento exchanges, and commissions.

Online content includes Regional Co-op and Immersive Theatre: Ensemble Act, while solo progression includes story chapters, side quests, commissions, Noctoyager Manual progression, exploration, combat challenges, Myriad content, Sanctuary features, and recurring version events.