Struggle Arms System (SAS) is a combat mechanic of the game that allows the player to unleash unique Psycho-Kinetic Abilities. Struggle Arms System or SAS is a system that allows you to temporarily borrow the psychic abilities of your party members by connecting your brain to theirs via a virtual cable. With this system, you can borrow psychic abilities Pyrokinesis, Duplication, Invisibility, Teleportation, Sclerokinesis, and more of your party members and activate them for a certain period.
By combining it with weapons and Psychokinesis, a variety of battle tactics become possible. The SAS gauge is used, and it is effective as long as the gauge lasts. The SAS menu is displayed in the lower right of the screen during battle. Pressing the corresponding mapped buttons will activate the SAS in that slot.
SAS in Combat
Struggle Arms System (SAS) is pretty much your best friend here when you are in combat. As the game progresses, you'll have different Companions who will hop in and out of your playable character's party such as Yuito or Kasane, eventually, leading up to the point of the game where all companions will be in reserve. You will encounter various types of Enemies here and it is best that you use SAS as much as you can such as SAS: Pyrokinesis, SAS: Clairvoyance, SAS: Sclerokinesis, so that you can borrow the Companions' Psycho-Kinetic Abilities. Although it is recommended that you use it as frequently as you can, but it is still important that you manage when to use it and for how long since each SAS ability has a cooldown and needs to recharge before you can use it again.
Using Multiple SAS Simultaneously
After learning certain skills, you will be able to activate 2 or more SAS simultaneously. * Some SAS cannot be activated together. You can use 
+(RS) to disengage all active SAS at once, or you can input + 
against to disengage one at a time.
Scarlet Nexus Struggle Arms System
SAS: Electrokinesis
Electrokinesis (Kasane): By borrowing electrokinesis, the attacks and Psychokinesis objects will have electricity. It can inflict the Shocked Status when repeatedly used. It is effective against enemies with the Soaked Status. Additionally, weapon combos create sparks, making it easier to damage airborne enemies. Additional effects will be added as you strengthen your bond with Shiden.
SAS: Velocity
While borrowing Hypervelocity, you can move at a pace that makes it feel as if time slowed down. Use it when confronting fast enemies or those you want to finish off quickly. Additional effects will be added as you strengthen your bond with Arashi.
SAS: Duplication
By borrowing the Duplication power, you can duplicate objects to use for Psychokinesis. While active, enemy shells are easier to break and it allows you to attack with multiple objects. Extremely effective when you want to finish off multiple enemies at the same time. Additional effects will be added as you strengthen your bond with Kyoka.
SAS: Invisibility
By borrowing the Invisibility power and vanishing, you will go undetected by enemies. You can sneak to the enemy's weak point and attack. Basic attacks, special attacks, and Psychokinesis attacks when the enemy does not detect you are always critical hits that apply massive physical and crush damage. Additional effects will be added as you strengthen your bond with Kagero.
SAS: Pyrokinesis
Pyrokinesis (Yuito): By borrowing Pyrokinesis, flames engulf weapons and Psychokinesis objects for the attack, and weapon combos will have an increased area. it increases damage to the enemy and can also cause the Burned Status when repeatedly used. It is effective against enemies with the Oiled Status. Additional effects will be added as you strengthen your bond with Hanabi.
SAS: Clairvoyance
By borrowing the Clairvoyance power, you can detect invisible enemies and see-through poor visibility conditions such as fog. Additionally, perfect dodges are easier to execute, allowing you to trigger a powerful Read Attack by performing a weapon attack immediately after. Additional effects will be added as you strengthen your bond with Tsugumi.
SAS: Sclerokinesis
By borrowing Sclerokinesis, you harden your entire body and render enemy attacks ineffective. The effective time shortens with the number of enemy attacks. Use it when there are no means to escape the enemy's attack. Additional effects will be added as you strengthen your bond with Gemma.
SAS: Teleportation
By borrowing the Teleportation power, pressing the corresponding button for steps becomes teleportation moves, allowing you to attack dangerous close-range enemies with quick strikes before retreating to a safe distance. Additionally, performing a weapon attack while in range of a target teleports you next to the enemy for a slash attack. It also allows you to move through walls. Additional effects will be added as you strengthen your bond with Luka.
SAS: Psychokinesis
Kassane Randall or Yuito Sumeragi as a Companion
Borrowing Psychokinesis from either Kasane (if you are playing as Yuito) or Yuito (if you are playing as Kasane) won't consume the Psychokinesis gauge. You will also be able to control all surrounding objects and use the Psychokinesis field to attack with all of them by pressing the corresponding buttons.
