| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.90/5 | 4.06/5 |
| Vol 2 | 3.02/5 | 4.04/5 |
| Vol 3 | 3.11/5 | 4.18/5 |
| Vol 4 | 2.99/5 | 4.16/5 |
| Vol 5 | 3.21/5 | 4.19/5 |
| Vol 6 | 2.96/5 | 4.07/5 |
| Vol 7 | 2.88/5 | 3.99/5 |
| Vol 8 | 3.00/5 | 4.02/5 |
| Vol 9 | 3.08/5 | 4.14/5 |
| Vol 10 | 3.07/5 | 4.12/5 |
| Vol 11 | 3.16/5 | 4.18/5 |
| Vol 12 | 3.47/5 | 4.32/5 |
| Vol 13 | 2.98/5 | 4.21/5 |
| Vol 14 | 3.48/5 | 4.33/5 |
| Vol 15 | 3.45/5 | 4.30/5 |
| Vol 16 | 3.12/5 | 4.09/5 |
| Vol 17 | 3.45/5 | 4.28/5 |
| Vol 18 | 3.62/5 | 4.34/5 |
| Overall | 3.14/5 | 4.34/5 |