| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.27/5 | 4.17/5 |
| Vol 2 | 3.25/5 | 4.13/5 |
| Vol 3 | 3.40/5 | 4.21/5 |
| Vol 4 | 3.20/5 | 4.13/5 |
| Vol 5 | 3.29/5 | 4.25/5 |
| Vol 6 | 3.31/5 | 4.23/5 |
| Vol 7 | 3.42/5 | 4.29/5 |
| Vol 8 | 3.26/5 | 4.25/5 |
| Vol 9 | 3.53/5 | 4.41/5 |
| Vol 10 | 3.12/5 | 4.08/5 |
| Vol 11 | 3.25/5 | 4.24/5 |
| Vol 12 | 3.48/5 | 4.43/5 |
| Vol 13 | 3.39/5 | 4.26/5 |
| Overall | 3.32/5 | 4.43/5 |