General Gameplan
Alice is the character that should get 
Yuzuha's Flavour Match. The goal is to just loop as many Assaults as possible while refreshing Artful with Polarity Assault Disorders.
Because Assault is a single tick of damage, 
Nicole is in a good position to apply her 
Core Passive: Mechanical Case debuff before they trigger. So whenever you're about to trigger an Assault, or make use of 
Basic Attack: Starshine Waltz Level 3 for Polarity Assault, swap to Nicole and either Basic or Dash Attack and keep up her DEF Shred.
If you have energy to 
EX Special Attack: Stuffed Sugarcoated Bullet, even better. When the Corruption gauge is near full, try to charge it so that it triggers Corruption just before Polarity Assault lands. Since it doesn't care about Disorder ICDs, it's an effective way at getting some quick burst.
Do keep an eye out for Nicole's bullets though, as you may find yourself running out of them if you attack too often. 
EX Specials and 
Ultimates should reload, but if not, just holding 
Dash for a little longer will have her manually reload and top you up again.
You will want to have Yuzuha trigger Assaults if you Basic Attack: Starshine Waltz late, so swap to Nicole, quickly attack or EX Special, then go immediately to Yuzuha so she can finish off with the debuff up. Just be careful to not stay on Nicole too long, as if you are on her while the "finisher" portion of her attack hits, that may lead to Yuzuha's Basic Attack: Hard Candy Shot Aftershock and lock you out, causing you to miss out on the Assault.
Drive Disc Maintenance
Between EXs from two supports, 
Astral Voice should more or less always be up. It flows nicely as you can EX Special Attack: Stuffed Sugarcoated Bullet on Nicole and trigger a 
Quick Assist to Yuzuha, who can then shortcut into a fast EX Special Attack: Cavity Alert, Right Now! - this combo both helps trigger Assault before Alice's Basic Attack: Starshine Waltz lands and provides a Quick Assist to Alice, which refreshes the Drive Disc buff and sets her up for her 5th Basic Attack hit.
This does change with Yuzuha's M2 Full of Colorful Company, as it effectively prevents her from bestowing Astral Voice to Alice for most of the run. So instead, the set-up follows a Alice -> Yuzuha -> Nicole order, with Yuzuha using the 
Chain Attack prompt back to Alice when possible.
Since Nicole now Quick Assists to Alice to maintain Astral Voice stacks, this means you can no longer EX and use the Quick Assist to go to Yuzuha who then triggers Assault. So this means you'll either want to EX before Basic Attack: Starshine Waltz is used (it should just about last long enough if Alice goes straight into a Level 3 after the Quick Assist), or use the EX but swap out before it lands to Yuzuha so that she can trigger Assault.
Proto Punk is rather RNG, as it will depend on how often the enemy attacks. There's not much to this other than trying to capitalise on parry opportunities when they present themselves. Do try to space out Defensive Assists to keep the buff up for as long as possible, as all characters in this team use up 2 Assist Points per parry, which means you get 3 before it's over.
Ultimates can help restore some of them mid-fight, so capitalise on this to extend the buff for as long as possible. With Yuzuha's M2 Full of Colorful Company, the readily available Chain Attacks can provide points and make upkeep a lot easier.
When parrying, pick and choose depending on your needs. Parry to Nicole if you want a fast way to trigger Corruption without spending Energy, or to Yuzuha if you need a quick Assault trigger. On most comps you'd look to use Yuzuha's timed 
Assist Follow-Up: Stuffed Hard Candy Shot, but in this team it just takes too long. The time is better spent attacking on Alice to build Blade Etiquette, so if you do parry on Yuzuha, go for the fast Assist Follow-Up: We Have Cookies option instead.
