
To learn more about D check the sections below. Use the tabsto quickly switch to the kind of information you're looking for.
Profile
Normal Attack
SMG
Mode: Normal
Ammo: 120
Reload: 1.5s
■ Affects target enemy.
Deals 8.73% ATK as damage.
Deals 200% damage when attacking core.
Vigorous Waves
Passive
Cooldown: -
■ Activates when entering Full Burst. Affects self.
Damage as strong element ▲ 46.93% for 15 sec.
Recovers 3.52% of ATK damage as HP, lasts for 15 sec.
■ Affects self when first activated.
Recovers 16.5% of ATK damage as HP, lasts for 15 sec.
Surprise Attack
Passive
Cooldown: -
■ Activates when the target appears. Affects all allies.
Fills Burst Gauge by 98.56%. Activates 1 time(s) per battle.
Become immune to Stun for 36.95 sec.
■ Activates when the target appears. Affects self.
Damage as strong element ▲ 91.09%, lasts for 15 sec.
Chastisement
Active
Cooldown: 40s
■ Affects all enemies.
Deals 426.24% of final ATK as damage.
■ Affects all Attacker allies.
Parts Damage ▲ 42.38% for 15 sec.
■ Affects all allies if the caster has immunity to Stun.
Full Burst Time ▲ 5.04 sec.

Review
Back then, D was released to deal with Modernia and Altesein (the train hit so hard back then). She can still counter them, but you have better options to do that instead of investing in her. Outside of those 2 bosses, she offers little to nothing, even against Wind weak bosses. You can just say she’s powercrept.
Look sick!
Good solution early on for Modernia and Altesein, 2 bosses that are super annoying in Special Interception.
Fallen out of meta.
Investment Tips
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Resilience Cube

Bastion Cube

Destruction Cube

Assault Cube

Resilience Cube

Bastion Cube
Assault Cube helps SMG wielders to actually hit something past Near range. While the Resilience Cube is a generic DPS increase (but it's better in scenarios when you fight stuff only in Near range as there Hit Rate isn't that useful).
Teams
Teams for D aren't available yet. They will be added soon.