Collaboration Stages · Stage 1Cats After Allにゃんこなのですよ1★ 100%2★ 150%3★ 200%4★ 300%Data updated: 2026-07-2430Energy Cost4,230XP Reward10,000Enemy Base HP4,200Stage Length5Max Enemies1.2Difficulty Build a lineup for this stage Test your team vs this stageStage rewards1% — Healer · first clear · Treasure RadarEnemy spawns (5)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesCelesse (Enemy)100%∞3.3s13.3s~20s100%—Nono (Enemy)100%∞33.3s53.3s~66.7s100%—Celesse (Enemy)100%30s3.3s~5.3s90%—Olga (Enemy)100%10s—90%BossMs. Sign200%∞900s900s100%—All Merc Storia: Showdown stages