Koyanskaya of Light

This is a beginner-friendly guide to Koyanskaya of Light in Fate/Grand Order (English). It breaks down what makes Koyanskaya of Light strong, her basic stats, skills, and Noble Phantasm, plus the Ascension and skill-up materials you'll need to raise them.

Koyanskaya of Light's Basic Information

Name	Koyanskaya of Light
Class	★5 Assassin
Obtain	Available only in Limited-Time Pickup Summons

Koyanskaya of Light's Strengths

One of the Best Buster Supporters

Koyanskaya of Light has powerful Buster buffs and can provide a 50% NP charge. Her ability to reduce Skill Cooldowns (CD) by 2 turns allows her to support Buster Attackers, enabling them to perform 3-turn NP loops if their NP charge skill has a 6-turn or lower CD. Because of this, she is best paired with Servants with Buster NP or Buster-heavy decks.

Tip!	Because Buster looping relies on Servant skills rather than enemy refund for NP charge, it is the perfect strategy for clearing irregular nodes with low enemy counts.

Special Attack Buff Against Human Attributes & Humanoid Traits

With her second skill, Koyanskaya can buff an ally to deal extra damage to enemies with the Human Attribute or the Humanoid trait. Both traits are common, and many enemies possess both, making this a very effective skill for increasing damage.

Also Functions as a Critical Support

Koyanskaya's third skill increases the Critical Strength and Critical Star Gather Rate of an ally's Buster cards. Combined with her second skill's effect of generating 20 Critical Stars, she can greatly boost the damage of their Buster cards.

Tip!	The boosted Critical Hits can be used to finish off enemies who survive an ally's Noble Phantasm!

Her Noble Phantasm Also Charges NP

Koyanskaya's Noble Phantasm deals AoE Buster damage, and its Overcharge effect can charge the team's NP gauge by 10 to 30% (at OC5). This additional utility allows her NP to be used after the main attacker's NP to quickly charge their NP gauge again.

Also Reduces Enemy Charge

Her NP can also reduce the Charge Bar of all enemies by 1. This is useful in high-difficulty quests for delaying enemy Noble Phantasms and preventing defeat. With the utility from her own NP, Koyanskaya can function as the main attacker; however, the cooldown on her NP charge skill prevents her from performing a Buster loop by herself.

Lack of Sustainability Makes Her Unsuitable for Long Battles

Koyanskaya is a purely offensive support Servant with no survivability skills like Invincibility, Evade, or HP recovery. This makes her poorly suited for longer battles. Her playstyle is focused on using her skill cooldown reduction effect and stacking buffs to help her team defeat enemies quickly.

Servants with Good Synergy

Compatible Attackers
	Archetype: EARTH (★5) Possesses a 100% NP battery. Using the Atlas Institute Uniform or an Order Change (Plugsuit) with cooldown reduction allows her to loop her NP for 3 turns with Black Grail, making her an effective and flexible farmer.
	Morgan (★5) With up to a 50% NP battery, she can perform a 3-turn NP loop, making her a powerful Berserker farmer. As a CRIT attacker, she also benefits greatly from Koyanskaya of Light's support.
	Aesc the Savior (★5) Her 50% NP charge, combined with Koyanskaya of Light's cooldown reduction, facilitates consistent NP looping. Additionally, the HP reduction from Koyanskaya of Light's skills helps maximize the damage from Aesc's own HP-dependent ATK buff.
	Kukulcan (★5) With a 50% NP battery, she is fully capable of 3-turn NP looping. Koyanskaya of Light's critical star generation provides excellent synergy, making it easy to activate Kukulcan's skill enhancement mechanic from Turn 1.
	Larva/Tiamat (★5) She has a 50% self NP battery and provides a 10% party-wide NP charge. This allows for 3-turn NP looping with a Double Koyanskaya of Light + Oberon system, significantly increasing her damage through consecutive NP usage. Additionally, the skill cooldown reduction makes it easier to stack multiple activations of her third skill.
	Mélusine (★5) An attacker capable of switching her Noble Phantasm (NP) type. With both a 100% and a 30% NP battery, she can perform a 3-turn loop with both her Single-Target (ST) and AoE NPs, providing greater farming flexibility.
	Koyanskaya of Dark (★5) In addition to providing a 30% party-wide NP charge and Buster buffs, she also provides ATK support for allies with the Wild Beast trait. Her AoE NP is well-suited for farming, giving her excellent synergy in setups like a Double Koyanskaya of Dark + Koyanskaya of Light composition.
	Altria Pendragon (★5) An attacker capable of 3-turn NP looping. Equipping a Kaleidoscope grants complete freedom over Mystic Code choice. Other setups using specific Mystic Codes and Append Skills can also increase Craft Essence (CE) flexibility. Furthermore, her skill that converts all command cards into Buster cards makes it easy to land reliable Buster critical hits, creating excellent synergy with Koyanskaya of Light.
	Cú Chulainn (★3) Has an 80% + 30% NP battery. This gives him complete freedom over his Craft Essence (CE) slot, enabling a 3-turn NP loop with Black Grail.
Compatible Supporters
	Koyanskaya of Light (★5) Using two Koyanskayas of Light allows for stacking cooldown reductions and NP batteries, forming the "Double Koyanskaya of Light System" for consecutive NP looping.
	Merlin (★5) He significantly increases damage with high-multiplier Buster and critical buffs, while his party-wide Invincibility and NP's HP regeneration compensate for Koyanskaya of Light's lack of defensive utility. This makes him an excellent partner for Koyanskaya of Light, both as a support and as a primary attacker.
	Altria Caster (★5) A supporter with multiple NP charge skills who benefits greatly from cooldown reduction. Her NP's Anti-Enforcement Defense is also excellent, allowing her to compensate for Koyanskaya of Light's lack of defensive utility.
	Zhuge Liang (Lord El-Melloi II) (★5) A support with substantial NP charge skills who benefits greatly from cooldown reduction. His Noble Phantasm can drain enemy charge, which, when paired with Koyanskaya of Light's NP, enables a lockdown strategy to prevent enemies from using their own Noble Phantasms.
	Himiko (★5) Highly recommended for critical-focused teams. She significantly boosts allies' damage with a combination of Buster, ATK, and Critical Strength buffs. Furthermore, her passive star generation ensures a steady supply of stars, making it easier to land critical hits consistently.

Koyanskaya of Light's Skills & Noble Phantasm

Skills & Noble Phantasm

Class	★5 Assassin
Cards
Obtain	Available only in Limited-Time Pickup Summons
HP / ATK	13081 / 11616（Lv Max）
Skill 1	Innovator Bunny【CT：10~8】 Increase one ally's NP Gauge by 30-50%[Lv] Reduce skill cooldown by 2 for one ally Decrease all allies' HP by 1000 [Demerit]
Skill 2	Massacring Technique (Human) A【CT：8~6】 Apply Special Attack [Human] to one ally (3T)[Lv] Apply Special Attack against enemies with [Human Attribute] (3T)[Lv] Apply a state that increases own NP Gauge during normal Buster attacks (3T)[Lv] for one ally Gain C. Stars[Lv]
Skill 3	NFF Special A【CT：8~6】 Increase Buster Card effectiveness (3T) [Lv] for one ally Increase Buster Card Critical Strength (3T) [Lv] for one ally Increase Buster Card C. Star Gather Rate (3T) [Lv] for one ally
Noble Phantasm	「Iz Tula, Seven Drive」 Increase own ATK (1 turn) Deal heavy damage to all enemies[Lv] Decrease their Charge Slightly increase all allies' NP Gauge[OC]
VA	Chiwa Saito
Illustrator	WADARCO

Append Skill

Extra Attack Boost	Increase Extra Attack Card's effectiveness by 30~50% for yourself
Load Magical Energy	Begin battle with NP charged at 10~20% for yourself
Anti-Archer (ATK Up)	Increase own ATK against Archer class by 20-30%

Card Performance

Alignment & Traits / Class Skills

Alignment & Traits
Alignment	Lawful / Evil / Beast
Traits	Female / Riding / Divine / Demonic / Beast / Demonic Beast
Class Skill
Riding Skill B	Increase Quick Card effectiveness by 8%
Independent Action EX	Increase Critical Strength by 12%
Independent Manifestation C	Increase Critical Strength by 6% Increase Death Resistance Increase Mental Debuff Resist
Morph A	Increase own Arts Card effectiveness by 10% Increase C. Star Drop Rate
Goddess Morph (Gun) B	Increase own NP Strength by 20%

Recommended Skill Leveling by Priority

Skill 1	Priority: ★★★ At Lv10 the single-target NP charge becomes 50%. As the key skill providing NP support and cooldown reduction, you'll want to level it first, but since the other skills are also excellent, generally aim for Lv10 on all skills.
Skill 2	Priority: ★★☆ It increases the multipliers of single-target Anti-Human + Anti-Human Attribute special attack + NP gain on Buster normal attack + Critical Star drop. It boosts damage to targets it's effective against and makes landing criticals easier, so level it up.
Skill 3	Priority: ★★★ It increases the multipliers of Buster Up + Buster Critical Strength up + Buster Card star concentration. It boosts damage, so prioritize leveling it alongside Skill 1.

Ascension & Skill Enhancement Materials

Ascension Materials

Stage 1	Assassin Piece x5
Stage 2	Assassin Piece x12 Mystic Spinal Fluid x22
Stage 3	Assassin Monument x5 Mystic Gunpowder x29 Stake of Wailing Night x15
Final Ascension	Assassin Monument x12 Stake of Wailing Night x29 Reactor Core of Dawn x8
Total	x17 x17 x22 x29 x44 x8 x4,400,000 QP

Skill Enhancement Materials

Lv1	Gem of Assassin x5
Lv2	Gem of Assassin x12
Lv3	Magic Gem of Assassin x5
Lv4	Magic Gem of Assassin x12 Mystic Gunpowder x15
Lv5	Secret Gem of Assassin x5 Mystic Gunpowder x29
Lv6	Secret Gem of Assassin x12 Mystic Spinal Fluid x15
Lv7	Mystic Spinal Fluid x29 Arrowhead of Malice x6
Lv8	Arrowhead of Malice x18 Egg of Truth x10
Lv9	Crystallized Lore x1
Total	x17 x17 x17 x1 x44 x44 x24 x10 x54,400,000 QP

Append Skill Enhancement Materials

Lv1	Gem of Assassinx5
Lv2	Gem of Assassinx12
Lv3	Magic Gem of Assassinx5
Lv4	Magic Gem of Assassinx12 Eternal Gearx5
Lv5	Secret Gem of Assassinx5 Eternal Gearx10
Lv6	Secret Gem of Assassinx12 Meteor Horseshoex5
Lv7	Meteor Horseshoex10 Tsukumo Mirrorx3
Lv8	Tsukumo Mirrorx8 Fragment of a Twinkling Starx10
Lv9	Crystallized Lorex1
Total	x17x17x17x1 x15x15x11x10 54,400,000 QP

Illustrator / Voice Actor & Final Ascension Art

Illustrator / Voice Actor

Parameters

Ascension Art (Final Ascension Spoiler Warning)

We have included images up to Final Ascension. Because they contain spoilers, please proceed with caution.

Default

1st Ascension

2nd-3rd Ascension

Final Ascension

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