Swift Strike (一閃, Issen, lit. "Flash")
Attributes		Target	Gauge Cost	Damage
Power	Reversed	All	3	7★: x7.29 - 9.10
6★: Raises STR by 1 tier & P-STR by 5 tiers/1 turn. Lowers targets' DEF by 1 tier & P-DEF by 3 tiers/1 turn. Inflicts more damage the higher your HP. 7★: 1 turn: ↑ R-STR by 3, STR by 1, P-STR by 5, ↓ targets' DEF by 1, P-DEF by 3. Inflicts more damage the higher your HP.
Swift Strike EX (一閃改, Issen Kai, lit. "Flash Revision")
Attributes		Target	Gauge Cost	Damage
Power		All	1	SN: x9.29 - 12.77
SN-SN+: 1 turn: ↑ STR, R- & P-STR 15, SP ATK B +170%, ↓ targets' R- & P-DEF 15. Count +2. Damage+: Higher slot number.

Swift Strike is a technique introduced in Kingdom Hearts II.

Mechanics

In Kingdom Hearts Union χ, Swift Strike is a special attack that targets all enemies. It costs 3 special attack gauges to perform. It inflicts more damage the higher the user's HP.

Special attack	Rarity	Base	•	••	•••	••••	•••••		Hits
Swift Strike +5	6★	x1.92 - 3.56	x1.96 - 3.64	x2.00 - 3.71	x2.05 - 3.79	x2.09 - 3.86	x2.13 - 3.94		1
Swift Strike +6	7★	—	—	—	—	—	x7.29 - 9.10		1

Special attack	Player Buff		Target Debuff	Duration
	+5	+6	+5-6
Swift Strike	+1  +5	+1  +5  +3	-1  -3	1 turn

Swift Strike EX is a special attack that targets all enemies. It costs 1 special attack gauge to perform. It raises enemy counters by 2, and inflicts more damage when placed in a higher slot.

Special attack	Rarity	Base	•	••	•••	••••	•••••		Hits
Swift Strike EX +6	7★	—	—	—	—	—	x9.29 - 12.77		1

Special attack	Player Buff	Target Debuff	Duration
	+6	+6
Swift Strike EX	+15  +15  +15  +170%	-15  -15	1 turn

Learning Swift Strike

Kingdom Hearts Union χ

• Swift Strike +5 is the special attack for medal 757: Sephiroth [EX].
• Swift Strike +6 is the special attack for medal 1325: Sephiroth [EX].

• Swift Strike EX +6 is the special attack for medals 1683: Supernova - FFRK Sephiroth and 1683: Supernova+ - FFRK Sephiroth.

Other appearances

Kingdom Hearts II

Sephiroth can use Swift Strike when fought in Kingdom Hearts II. When used, he unleashes a charging slash which inflicts thirteen additional hits if it connects. Swift Strike can be parried with the Block Reaction Command.

• Kingdom Hearts Union χ special attacks