Asuka Shikinami Langley: Wille
wasuka
Wind 
Machine Gun 
Attacker 
Burst 3 
Abnormal Tier 1 Anti A.T. Field
■ Activates after landing 50 normal attack(s). Affects the target(s).
Deals 471.86% of final ATK as additional damage.
■ Activates only when in Annihilation State status. Affects self.
Annihilation State's additional effect:
Target: Affects 2 enemy unit(s) within the attack range nearest to the crosshair every 10 shot(s).
Damage: Deals 15.62% of final ATK as damage.
Additional effect: Anti A.T. Field: Damage Taken ▲ 0.83% for 30 sec, stacks up to 30 time(s).
Emergency Repair
■ Activates when entering Full Burst. Affects self when in Annihilation State status.
Attack Damage ▲ 30.97% for 10 sec.
■ Activates when using Annihilation. Affects self.
Emergency Repair: Function: Reduces MG heating up speed and clears ammo. Fixes recharge speed and restores HP based on the Max HP proportion continuously.
Effect 1: MG heating up speed ▼ 100% for 3 sec.
Effect 2: Clears 100% of ammo.
Effect 3: Constantly recovers 3.77% of caster's final Max HP every 1 sec over 3 sec.
Effect 4: Fixes the recharge speed with a 60% increase for 1 shot(s).
Annihilation State
■ Affects self.
Annihilation State: Function: Reduces the normal attack damage while increasing attack capabilities.
Effect 1: Normal Attack Damage Multiplier ▼ 40% for 9 sec.
Effect 2: Reloads 21% magazine(s).
Effect 3: ATK ▲ 46.8% of caster's ATK for 9 sec.
Effect 4: Attack Damage ▲ 36% for 9 sec.
■ Affects the target(s) afflicted with Anti A.T. Field.
Annihilation:Function: After Annihilation State ends, fires powerful attacks at targets affected by Anti A.T. Field.
Deals 6.62% of final ATK as additional damage.
Mirrors the stack count of Anti A.T. Field for certain targets.
Anti A.T. Field status is removed after the effect is triggered.
Skill recommendations
Build
CUBES
Like all machine guns; Bastion. For bosses with parts you can also run Destruction (if you have levelled it up).
OL GEAR
Like every damage dealer ATK, elemental damage and max ammo take priority. You can get crit lines as filler for higher damage output.
Solo Raid Usage
This is based on the top 50 players of all NIKKE servers combined. Data is from enikk.app, check their website for a lot more raid data.
Pros & Cons
- Amazing DPS even without using Wind Rei that's also cheap to build, since you can focus on skill 1 and level up the rest over time
- Just like xLudmilla and Modernia, can be used as an off burst and it's even better than those 2 in terms of raw damage output