| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.92/5 | 4.58/5 |
| Vol 2 | 4.09/5 | 4.63/5 |
| Vol 3 | 3.86/5 | 4.55/5 |
| Vol 4 | 3.96/5 | 4.59/5 |
| Vol 5 | 3.76/5 | 4.52/5 |
| Vol 6 | 3.72/5 | 4.50/5 |
| Vol 7 | 3.96/5 | 4.59/5 |
| Vol 8 | 4.10/5 | 4.64/5 |
| Vol 9 | 4.00/5 | 4.60/5 |
| Vol 10 | 3.85/5 | 4.55/5 |
| Vol 11 | 3.99/5 | 4.60/5 |
| Vol 12 | 4.01/5 | 4.61/5 |
| Vol 13 | 3.80/5 | 4.54/5 |
| Vol 14 | 3.90/5 | 4.58/5 |
| Overall | 3.92/5 | 4.64/5 |