Stories of Legend · Stage 4OS GraveyardMrs.ドスの墓1★ 100%2★ 120%3★ 130%4★ 100%Data updated: 2026-07-24155Energy Cost124,573XP Reward400,000Enemy Base HP3,600Stage Length2Max Enemies9.2Difficulty Build a lineup for this stage Test your team vs this stageStage rewards10% — XP ×294,500 · first clear · Treasure Radar1% — Speed Up ×1Enemy spawns (4)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesProfessor A.150%10.1s—100%BossTeacher Bun Bun1500%133.3s—100%—Bun Bun Black200%126.7s—100%—Ms. Sign100%∞900s900s100%—All IT Catacombs stages