| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.58/5 | 4.37/5 |
| Vol 2 | 3.58/5 | 4.37/5 |
| Vol 3 | 3.80/5 | 4.43/5 |
| Vol 4 | 3.68/5 | 4.40/5 |
| Vol 5 | 3.58/5 | 4.35/5 |
| Vol 6 | 3.93/5 | 4.48/5 |
| Vol 7 | 3.67/5 | 4.40/5 |
| Vol 8 | 3.73/5 | 4.42/5 |
| Vol 9 | 3.74/5 | 4.42/5 |
| Vol 10 | 3.49/5 | 4.33/5 |
| Vol 11 | 3.85/5 | 4.45/5 |
| Vol 12 | 3.61/5 | 4.35/5 |
| Vol 13 | 3.42/5 | 4.30/5 |
| Vol 14 | 3.59/5 | 4.34/5 |
| Vol 15 | 3.68/5 | 4.39/5 |
| Overall | 3.67/5 | 4.48/5 |