FrimaHas Favorite Item

With her Favorite Item, she is an Iron Burst 1 supporter and sniper who stacks Drowsy with Full Charges until reaching Awake, then runs ally DEF-ignoring damage increase, Max HP increase, and her Burst area debuff all at once.
Full Charge count and the Awake condition must be handled by hand, so manual control matters a lot.
She shines in fights against a single high-DEF boss, but in content where mobs change often her stacks barely build and her range of use is narrow.

Each Full Charge hit stacks a DEF reduction through Drowsy, and when six Full Charges land on the same enemy and Drowsy hits max stacks, Awake applies and her normal attacks turn into DEF-ignoring damage. Each time she fires a Full Charge, her skill ... Ah briefly grants all allies a Max HP increase, and after Awake, the same action also adds a DEF-ignoring damage increase for all allies. Her Burst Skill ... Annoying deals damage and a DEF reduction to multiple high-DEF enemies and grants all allies a Max HP increase, and in the Awake state grants all allies a large DEF-ignoring damage increase.

Fill a Full Charge and keep hitting the same enemy to stack Drowsy to max.
Landing the sixth Full Charge applies Awake, so from then on keep up DEF-ignoring damage with normal shots.
After Awake is active, keep firing Full Charges to refresh the Max HP increase and DEF-ignoring damage increase, and time her Burst Skill to when the DEF-ignoring damage increase is large.
On auto alone, Drowsy stacks and the Awake condition often break, so handle Full Charge aim and order manually.

Manual input needed

Match the Drowsy and Awake conditions with Charge Speed and Charge Damage, and cycle Full Charges with Reload Speed. If Harmony Cube levels differ a lot, use the higher-level cube before the theoretical ranking.

Four lines of Elemental Advantage damage and ATK are the baseline. Use Charge Speed and Charge Damage to cycle the conditions of her skills ... I Want to Sleep and ... Ah. Cover Hit Rate through gear and Overload.

Raise ... I Want to Sleep first, since it creates Drowsy and Awake. Next raise her Burst ... Annoying, which adds a large DEF-ignoring damage increase in the Awake state. Max ... Ah last, since it refreshes ally buffs each Full Charge.

Stacks and Awake apply reliably in fights against a single high-DEF boss where she can land many Full Charges. In story sections where enemies change often, her buffs drop easily.

In the Awake state, her Burst ... Annoying grants all allies a large increase to DEF-ignoring damage.
At max Drowsy stacks, her DEF reduction and DEF-ignoring normal shots contribute against high-DEF enemies.
Her Burst applies a debuff to multiple high-DEF enemies and a Max HP increase to allies at once.

Stacking Drowsy to max and reaching Awake takes six Full Charges, so if enemies change often, the condition breaks.
As a sniper, longer gaps between Full Charges mean longer to reach Drowsy and Awake.
As a Burst 1, the same squad needs a planned Burst order.

Included in the Standard Recruitment pool.