| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.51/5 | 4.24/5 |
| Vol 2 | 3.67/5 | 4.42/5 |
| Vol 3 | 3.48/5 | 4.19/5 |
| Vol 4 | 3.38/5 | 4.23/5 |
| Vol 5 | 3.39/5 | 4.25/5 |
| Vol 6 | 3.37/5 | 4.21/5 |
| Vol 7 | 3.46/5 | 4.37/5 |
| Vol 8 | 3.44/5 | 4.39/5 |
| Vol 9 | 3.61/5 | 4.44/5 |
| Vol 10 | 3.58/5 | 4.45/5 |
| Vol 11 | 3.47/5 | 4.31/5 |
| Vol 12 | 3.32/5 | 4.29/5 |
| Vol 13 | 3.81/5 | 4.53/5 |
| Vol 14 | 3.54/5 | 4.36/5 |
| Overall | 3.49/5 | 4.53/5 |