Regular Event Stages · 5 stages
When it opens
- Apr 16–May 1, all day
| # | Stage | Boss | Enemies | Rewards | Base HP |
|---|---|---|---|---|---|
| 1 | Faculty Change |  Boss Ms. Madonna |      |  100%1st 30% | 150,000 |
| 2 | You in a Petri Dish | Boss Ms. Madonna 150% |  | 100%1st 45% | 250,000 |
| 3 | Dangerous Equations | Boss Ms. Madonna 150% |     | ×2100%1st ×25% 57% | 350,000 |
| 4 | Litmus of Love | - |   | ×2100%1st ×210% 67.5% | 400,000 |
| 5 | U + Me = Photosynthesis | Boss Ms. Madonna 300% |     | ×3100%1st ×230% 70% | 450,000 |