| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.53/5 | 4.34/5 |
| Vol 2 | 3.54/5 | 4.46/5 |
| Vol 3 | 3.40/5 | 4.42/5 |
| Vol 4 | 3.40/5 | 4.37/5 |
| Vol 5 | 3.39/5 | 4.28/5 |
| Vol 6 | 3.38/5 | 4.27/5 |
| Vol 7 | 3.53/5 | 4.41/5 |
| Vol 8 | 3.35/5 | 4.40/5 |
| Vol 9 | 3.49/5 | 4.40/5 |
| Vol 10 | 3.43/5 | 4.37/5 |
| Vol 11 | 3.62/5 | 4.47/5 |
| Vol 12 | 3.47/5 | 4.37/5 |
| Vol 13 | 3.44/5 | 4.42/5 |
| Overall | 3.46/5 | 4.47/5 |