>struggling against difficulty 4 SSA
This is my first suboptimal attempt with this team comp. Chiori is c1, Xilonen is c0. Rosaria deals shit damage. Layla deals no damage. Chiori deals mediocre damage. Xilonen deals no damage.

If you're struggling with this it's because you're a retard who is trying to unga bunga without knowing how the mechanic works. Maintaining high Cryo application at all times during the spinning phase is by far the single most important thing against this boss. Nothing else matters until you get to whale investment levels where you can brute force it up until Dire.