| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.12/5 | 4.11/5 |
| Vol 2 | 2.86/5 | 3.87/5 |
| Vol 3 | 3.08/5 | 4.16/5 |
| Vol 4 | 2.97/5 | 4.11/5 |
| Vol 5 | 3.15/5 | 4.17/5 |
| Vol 6 | 2.96/5 | 3.89/5 |
| Vol 7 | 3.12/5 | 4.03/5 |
| Vol 8 | 3.04/5 | 4.12/5 |
| Vol 9 | 2.95/5 | 4.11/5 |
| Vol 10 | 2.91/5 | 4.08/5 |
| Vol 11 | 3.15/5 | 4.22/5 |
| Vol 12 | 3.06/5 | 4.18/5 |
| Vol 13 | 3.12/5 | 4.18/5 |
| Vol 14 | 3.13/5 | 3.99/5 |
| Vol 15 | 2.98/5 | 4.09/5 |
| Vol 16 | 2.69/5 | 3.95/5 |
| Vol 17 | 2.93/5 | 3.99/5 |
| Vol 18 | 2.98/5 | 4.13/5 |
| Vol 19 | 2.98/5 | 4.04/5 |
| Vol 20 | 2.81/5 | 4.04/5 |
| Vol 21 | 3.02/5 | 4.17/5 |
| Vol 22 | 2.82/5 | 4.11/5 |
| Vol 23 | 2.97/5 | 3.91/5 |
| Vol 24 | 3.05/5 | 4.06/5 |
| Overall | 2.99/5 | 4.22/5 |