Special Stages · Stage 4Aku Studies 101: Inquiry悪魔研究Ⅰ考察Data updated: 2026-07-24100Energy Cost8,930XP Reward800,000Enemy Base HP4,600Stage Length12Max Enemies9.1Difficulty Build a lineup for this stage Test your team vs this stageStage rewards100% — Aku Catfruit Seed ×1 · first clearEnemy spawns (8)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesGabriel300%∞6.7s20s~23.3s100%—Aku Doge500%310s13.3s~16.7s100%—Mr. Angel100%100.1s10s~13.3s99%—Aku Doge500%∞0.1s23.3s~30s99%—Aku Gory250%50.1s26.7s~30s99%—Angelic Sleipnir100%10.1s—99%—Camelle200%10.1s—99%BossMs. Sign100%∞900s900s100%—All Empress' Report 1 stages