Sakura
Fire 
Sniper Rifle 
Supporter 
Burst 1 
Tetra Tier 5 Cherry Blossom Tea
■ Activates after 3 normal attack(s). Affects all allies.
Cherry Blossom Tea: 8.15% of DEF, stacks up to 10 time(s) and lasts for 15 sec.
Falling Petals
■ Affects all allies.
When attacking an enemy projectile, damage to that projectile ▲ 7.74% permanently.
■ Activates when entering Full Burst. Affects all allies.
Burst Skill cooldown ▼ 4.84 sec.
Resplendent Cherry Blossom
■ Affects all allies.
Damage dealt by Wind code enemies ▼ 90.72%, lasts for 30 sec. Activates 1 time(s) per battle.
ATK ▲ 23.76% of caster's ATK, lasts for 10 sec.
■ Affects all allies when Cherry Blossom Tea is fully stacked.
Damage to interruption part ▲ 23.54%, lasts for 30 sec.
Skill recommendations
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.
Extra notes
By today's standards, a really bad kit that's just underwhelming on most (if not all) PVE content. Invest only if she is your waifu.