| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.12/5 | 4.27/5 |
| Vol 2 | 3.46/5 | 4.41/5 |
| Vol 3 | 3.55/5 | 4.47/5 |
| Vol 4 | 3.57/5 | 4.47/5 |
| Vol 5 | 3.45/5 | 4.35/5 |
| Vol 6 | 3.36/5 | 4.30/5 |
| Vol 7 | 3.41/5 | 4.33/5 |
| Vol 8 | 3.57/5 | 4.38/5 |
| Vol 9 | 3.52/5 | 4.39/5 |
| Vol 10 | 3.61/5 | 4.45/5 |
| Vol 11 | 3.44/5 | 4.39/5 |
| Vol 12 | 3.40/5 | 4.41/5 |
| Vol 13 | 3.83/5 | 4.56/5 |
| Vol 14 | 3.99/5 | 4.60/5 |
| Vol 15 | 3.48/5 | 4.38/5 |
| Vol 16 | 3.78/5 | 4.52/5 |
| Overall | 3.53/5 | 4.60/5 |