 In the game's releases on single screen systems (mobile and Switch), the Battle System has been modified to reflect the lack of a second screen.The current partner instead acts as a separate pin among Neku's other pins, which the player can call in to perform attacks by similar touchscreen actions like tapping on an enemy or slashing down on one.The player must balance the use of the partner pin with Neku's own attacks, going to their partner repeatedly to build up towards the Fusion attack.