Special Stages · Stage 4Mosquito Hellやぶ蚊との死闘1★ 100%2★ 150%3★ 200%70Energy Cost9,870XP Reward100,000Enemy Base HP4,800Stage Length9Max Enemies4.2Difficulty Test your team vs this stageStage rewards4% — Awa-Odori Cat · first clear · Treasure RadarEnemy spawns (11)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesHippoe200%50.1s10s~20s100%—Metal Hippoe100%110s—100%—Teacher Bear200%130s—100%—Teacher Bear200%140s—100%—Fireworks Guys (High-Yield)100%∞50s33.3s~50s100%—Fireworks Guys (Low-Yield)100%∞66.7s50s~66.7s100%—St. Pigge the 2nd100%50.1s33.3s99%—Pigge200%∞0.1s30s~60s99%—Festive Otter100%30.1s25s99%—Pigge200%10.1s—99%BossMs. Sign100%∞900s900s100%—All Summer Diary stages