In regular SU finally found a winning cute boy + Kafka team, pretty much lets DoT handle Gepard on highest difficulty
Path of Remembrance + Eonian River to prevent enemies from attack
w Nihility Blessings ( DoT turn extension, DoT trigger at start of turn, DoT Heal blessing)
Yanqing (e1) for freeze application + breaking for applying Dissociation (Yanqing at 150+ SPD)
Luka (e6) for bleed application + breaking + triggering Kafka followup attack
Arlan (e4) as main damager (crit rate build)
Kafka for shock application
Risks fof the team is everyone but Kafka is a glass cannon, struggle to take two hits from Gepard soldiers, and his "for preservation" attack at the start of each round.
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Next I'll work on trying team options of Blade, Mr Yang, and Kafka, and Yanqing, all my 5stars.