| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.14/5 | 4.28/5 |
| Vol 2 | 2.88/5 | 4.07/5 |
| Vol 3 | 3.10/5 | 4.33/5 |
| Vol 4 | 2.82/5 | 4.12/5 |
| Vol 5 | 3.23/5 | 4.31/5 |
| Vol 6 | 3.15/5 | 4.30/5 |
| Vol 7 | 3.08/5 | 4.29/5 |
| Vol 8 | 3.07/5 | 4.16/5 |
| Vol 9 | 2.98/5 | 4.20/5 |
| Vol 10 | 2.90/5 | 4.22/5 |
| Vol 11 | 3.02/5 | 4.23/5 |
| Vol 12 | 3.13/5 | 4.28/5 |
| Vol 13 | 3.03/5 | 4.18/5 |
| Overall | 3.05/5 | 4.33/5 |