Product 23

A Burst 2 Wind Shotgun and debuff-leaning R Nikke who raises her own DEF on her last bullet and lowers the DEF of 2 high-ATK enemies with her Burst.
She is not a core pick in Story, bosses, or Raids.
Given her R rarity and low debuff and healing values, she's barely worth investing in.

Landing her last bullet briefly raises her own DEF, and Skill 2 heals her based on her attack damage for 10 sec. Her Burst applies a DEF reduction to the 2 enemies with the highest ATK.

Land her last bullet to keep her DEF buff rolling.
Skill 2 restores her own HP.
Her Burst lowers the DEF of the 2 enemies with the highest ATK.
Auto is enough by default.

There is little evidence of combos used together in the same squad in the recent meta.

To line up her last-bullet cycle, cover Reload with the Resilience Cube and Bastion Cube. If the cube level gap is large, use the higher-level Harmony Cube regardless of ranking.

As an R Supporter, she's not worth Overload investment. If you use her, prioritize DEF lines; Elemental Advantage and ATK are low priority.

She isn't a meta core pick, so you rarely spend skill books on her. Only if you must, raise Order: Special BulletsB to 4; Order: Emergency Measures2 and Order: Power Boost1 are low priority.

She doesn't appear in top Solo Raid lineups. Use her only as a temporary debuffer early on when your roster is short.

Her last bullet can raise her own DEF.
Skill 2 restores her own HP.
Her Burst lowers the DEF of the 2 enemies with the highest ATK.

Her DEF debuff is short-lived and limited by her R rarity relative to its value.
Her own damage contribution is nearly zero.
She isn't a core pick in the Burst 2 debuff and Supporter slot.