| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.39/5 | 4.42/5 |
| Vol 2 | 3.43/5 | 4.47/5 |
| Vol 3 | 3.22/5 | 4.45/5 |
| Vol 4 | 3.41/5 | 4.42/5 |
| Vol 5 | 3.57/5 | 4.51/5 |
| Vol 6 | 3.44/5 | 4.42/5 |
| Vol 7 | 3.38/5 | 4.46/5 |
| Vol 8 | 3.00/5 | 4.38/5 |
| Vol 9 | 3.45/5 | 4.47/5 |
| Vol 10 | 3.56/5 | 4.51/5 |
| Vol 11 | 3.59/5 | 4.52/5 |
| Vol 12 | 3.59/5 | 4.54/5 |
| Vol 13 | 3.62/5 | 4.52/5 |
| Overall | 3.43/5 | 4.54/5 |