Campaign Decoy Stall Team: Liter · Rei · Modernia · Noir · 1 flex Attacker. Fighting Spirit deploys a decoy at the start of battle that absorbs most incoming hits and self-heals for 96% Max HP over 240 sec, letting Modernia and Noir unload safely through most of a long Campaign stage. Arena/PvP Opening Tank Team: Rei · Quency · 1 flex Supporter · Drake · Power. The Fighting Spirit decoy soaks the opponent's opening barrage in place of the carries, combined with Model Senior Student's self-taunt and damage reduction, letting Drake and Power survive the most dangerous opening phase of a PvP match. Raid & Interception Classic Stall Team: Rei · Biscuit · Folkwang · Guilty · 1 flex Attacker. The 240-sec decoy covers nearly the full length of a standard Raid/Interception fight, and Biscuit's constant healing keeps the whole team standing until the boss goes down.

Rei — Stats, Skills, Best Teams

Q: Should you pull?

Should you pull?CONSIDER IT — Rei is a specialized Defender protecting your carry via a decoy, worth considering for squads with a fragile carry or lacking a tank; her investment value is rated medium-to-high by the KR community, not a top priority if you already have a more stable taunt/shield Defender.

30-second summary of Rei

Rei is a Water Nikke in the Defender class, manufactured by Tetra. Stats and skill text below come straight from the game's data.

“Hates being told but still acts like a third-grader from the M.M.R. Vocational School. Has the awareness of a senior and looks after her underclassmen."”

Updated: 2026-08-02

Should you pull?

CONSIDER IT — Rei is a specialized Defender protecting your carry via a decoy, worth considering for squads with a fragile carry or lacking a tank; her investment value is rated medium-to-high by the KR community, not a top priority if you already have a more stable taunt/shield Defender.

Review & Analysis

Rei is a Water Defender wielding an SMG with Burst I, built around a unique decoy mechanic that lets her soak damage for the team with impressive durability. Skill 2 Fighting Spirit triggers automatically at the start of battle, spawning a decoy that heals itself massively over 240 seconds. Skill 1 Senior Support triggers after 60 normal attacks, filling the team's Burst Gauge and healing the decoy if it's still active. Her Burst Model Senior Student lets her Attract enemy fire while reducing damage taken, while continuing to heal the decoy — a kit where decoy durability is the whole defensive foundation.

Base Stats

HP711,171

ATK17,059

DEF4,364

Max Ammo120

Reload Time1.83s

Skills

Normal Attack

■ Affects target enemy.
Deals 9.15% of ATK as damage.

Senior SupportSkill 1

■ Activates after 60 normal attack(s). Affects all allies.
$bcolFills Burst Gauge $bfcol by 2.47 %.
■ Affects decoy when decoy exists
Recovers HP by 2.1% of the caster's Max HP.

Fighting SpiritSkill 2

■ Activates at the start of the battle. Affects self.
Decoy: Recovers avatar with 96% of caster's Max HP for 240 sec.

Model Senior StudentBurst Skill

■ Affects self
Attracts for 5 sec.
Damage Taken ▼ 14.4% for 10 sec.
■ Affects the decoy when decoy exists.
Recovers 2.27% of caster's Max HP every 1 sec for 10 sec.

Skill Investment Priority

Prioritize Skill 2 Fighting Spirit (self-healing decoy, the foundation her whole kit survives on) → Burst Model Senior Student (reduces damage taken + sustains the decoy, her main active tanking tool) → Skill 1 (Burst Gauge fill for the team, supportive).

Skill investment roadmap (Skill 1/Skill 2/Burst — per KR community): 4/7/7 → 7/9/9 (clean graduation) → 10/10/10 (lower value than expected). Why: Skill 2 matters most, then Burst, Skill 1 least; pushing past 7/9/9 gives diminishing returns.

Strengths & Weaknesses

Strengths

Skill 2 spawns a decoy that absorbs damage in place of allies, healing it for up to 96% Max HP over 240 seconds — a rare carry-protection tool for a Defender.
Her Burst self-Attracts and lowers damage taken by 14.4%, stacking with the decoy for two consecutive layers of defense.
Skill 1 both fills the Burst Gauge and heals the decoy, supporting both burst rhythm and decoy durability at the same time.

Weaknesses

Her SMG normal-attack multiplier is only 9.15% ATK, contributing almost no damage outside her skills.
Skill 1 needs 60 normal attacks to trigger, slow to come online in short fights.
Her entire kit revolves around the decoy/aggro-diversion, with no damage buff or CDR for allies.

Overload Priority

Overload priority by weapon type — applies to every Nikke using this weapon.

Sub-stat	Priority	Rolls
ATK		4x
Hit Rate		2-4x
Elemental DMG		2x
Max Ammo		1-2x

Gear →

General Info

Meta Tier

D

Class

Defender

Element

Water

Weapon Type

SMG

Manufacturer

Tetra

Squad

School Circle

Voice Actors

Bang Yeon-ji · Tatiana Varria · Aimi Tanaka

Illustrator

D.ramz

Release date

April 27, 2023

Recommended Build

Cubes

Vigor Cube / Resilience Cube

Overload (OL) Priority

Increase ATK › Increase Hit Rate › Increase Element Damage Dealt

Suggested by role & weapon. See: Gear · Cubes

Recommended Teams

Campaign

Decoy Stall Team: Liter · Rei · Modernia · Noir · 1 flex Attacker. Fighting Spirit deploys a decoy at the start of battle that absorbs most incoming hits and self-heals for 96% Max HP over 240 sec, letting Modernia and Noir unload safely through most of a long Campaign stage.

Arena/PvP

Opening Tank Team: Rei · Quency · 1 flex Supporter · Drake · Power. The Fighting Spirit decoy soaks the opponent's opening barrage in place of the carries, combined with Model Senior Student's self-taunt and damage reduction, letting Drake and Power survive the most dangerous opening phase of a PvP match.

Raid & Interception

Classic Stall Team: Rei · Biscuit · Folkwang · Guilty · 1 flex Attacker. The 240-sec decoy covers nearly the full length of a standard Raid/Interception fight, and Biscuit's constant healing keeps the whole team standing until the boss goes down.

Lore & Trivia

“Hates being told but still acts like a third-grader from the M.M.R. Vocational School. Has the awareness of a senior and looks after her underclassmen."”