Weapon details
An obsidian blade of unparalleled sharpness, light as a song. It was modified by a certain artisan to come equipped with a record-playing detachable Phlogiston Device.
Halcyon Years Unending
R5
Gain "Ode to Flowers" after Normal or Plunging Attacks hit an opponent: DEF increases by 16% and gain a 20% All Elemental DMG Bonus for 6s. Max 2 stacks. Can trigger once per 0.1s. When this effect reaches 2 stacks or the 2nd stack's duration is refreshed, increase all nearby party members' All Elemental DMG Bonus by 16% for every 1,000 DEF the equipping character has, up to a maximum of 51.2%, for 15s.
Phase 0
Level cap: 20
Adventure rank required: -
Mora: -
Materials
-
Phase 1
Level cap: 40
Adventure rank required: 15
Mora: 10,000
Materials
Juvenile Fang x3 
Axis of the Secret Source x5 
Night-Wind's Mystic Consideration x5 Phase 2
Level cap: 50
Adventure rank required: 25
Mora: 20,000
Materials
Juvenile Fang x12 Axis of the Secret Source x18 
Night-Wind's Mystic Premonition x5 Phase 3
Level cap: 60
Adventure rank required: 30
Mora: 30,000
Materials
Seasoned Fang x9 
Sheath of the Secret Source x9 Night-Wind's Mystic Premonition x9 Phase 4
Level cap: 70
Adventure rank required: 35
Mora: 45,000
Materials
Seasoned Fang x14 Sheath of the Secret Source x18 
Night-Wind's Mystic Augury x5 Phase 5
Level cap: 80
Adventure rank required: 40
Mora: 55,000
Materials
Tyrant's Fang x9 
Heart of the Secret Source x14 Night-Wind's Mystic Augury x9 Phase 6
Level cap: 90
Adventure rank required: 50
Mora: 65,000
Materials
Tyrant's Fang x18 Heart of the Secret Source x27 
Night-Wind's Mystic Revelation x6