Eternal Session

Eternal Session (エターナルセッション) is a limit that appears in Kingdom Hearts II. Together, Sora and Riku can use the joint attack, Session.

Mechanics
In Kingdom Hearts II, Eternal Session is an action ability exclusive to Riku. It costs 3 to equip and all of Sora's MP to use. The limit begins with Session (セッション), in which Sora and Riku perform a rapid flurry of attacks. Then, Last Saber (ラストセイバー) becomes available in the Attack slot, which causes Sora and Riku to rapidly jab at an enemy with their Keyblades, and Dark Cannon (ダークカノン) can be used as a Reaction Command, allowing the duo to fire a barrage of dark orbs at enemies. Afterwards, Sora and Riku go back-to-back and new attacks can be used that enlarge the duo's Keyblades and encase them in light. Overriding the Attack command, XIII Blades (XIIIソード) allows the duo to perform a slicing combo that midway divides each of their Keyblades into multiple blades that spin radially. Replacing the Reaction Command, Master Hearts (マスターハーツ) causes the duo to perform a sweeping combo with long range. Soon after, the finisher, All's End (オールオーバー), can be used, in which Sora and Riku's Keyblades float side-by-side in energy orbs that reel in enemies before exploding. During the limit, Sora can move around freely. The limit can be cancelled early through the Stop (やめる) command in the Limit slot.

Kingdom Hearts II

 * Riku has Eternal Session as a default ability.