| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.43/5 | 4.25/5 |
| Vol 2 | 3.47/5 | 4.29/5 |
| Vol 3 | 3.23/5 | 4.16/5 |
| Vol 4 | 3.67/5 | 4.41/5 |
| Vol 5 | 3.48/5 | 4.31/5 |
| Vol 6 | 3.39/5 | 4.24/5 |
| Vol 7 | 3.37/5 | 4.14/5 |
| Vol 8 | 3.38/5 | 4.21/5 |
| Vol 9 | 3.73/5 | 4.45/5 |
| Vol 10 | 3.39/5 | 4.27/5 |
| Vol 11 | 3.66/5 | 4.42/5 |
| Vol 12 | 3.45/5 | 4.35/5 |
| Vol 13 | 3.63/5 | 4.43/5 |
| Vol 14 | 3.66/5 | 4.41/5 |
| Vol 15 | 3.78/5 | 4.48/5 |
| Vol 16 | 3.63/5 | 4.41/5 |
| Vol 17 | 3.53/5 | 4.39/5 |
| Vol 18 | 3.50/5 | 4.31/5 |
| Vol 19 | 3.56/5 | 4.35/5 |
| Overall | 3.53/5 | 4.48/5 |