| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.11/5 | 4.27/5 |
| Vol 2 | 3.23/5 | 4.25/5 |
| Vol 3 | 3.32/5 | 4.39/5 |
| Vol 4 | 3.20/5 | 4.37/5 |
| Vol 5 | 3.42/5 | 4.40/5 |
| Vol 6 | 3.17/5 | 4.28/5 |
| Vol 7 | 3.09/5 | 4.20/5 |
| Vol 8 | 3.21/5 | 4.23/5 |
| Vol 9 | 3.29/5 | 4.35/5 |
| Vol 10 | 3.28/5 | 4.33/5 |
| Vol 11 | 3.37/5 | 4.39/5 |
| Vol 12 | 3.68/5 | 4.53/5 |
| Vol 13 | 3.19/5 | 4.42/5 |
| Vol 14 | 3.69/5 | 4.54/5 |
| Vol 15 | 3.66/5 | 4.51/5 |
| Vol 16 | 3.33/5 | 4.30/5 |
| Vol 17 | 3.66/5 | 4.49/5 |
| Vol 18 | 3.83/5 | 4.55/5 |
| Overall | 3.37/5 | 4.55/5 |