| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.35/5 | 4.28/5 |
| Vol 2 | 3.40/5 | 4.34/5 |
| Vol 3 | 3.44/5 | 4.33/5 |
| Vol 4 | 3.53/5 | 4.36/5 |
| Vol 5 | 3.54/5 | 4.42/5 |
| Vol 6 | 3.57/5 | 4.39/5 |
| Vol 7 | 3.85/5 | 4.54/5 |
| Vol 8 | 3.57/5 | 4.39/5 |
| Vol 9 | 3.73/5 | 4.51/5 |
| Vol 10 | 3.86/5 | 4.55/5 |
| Vol 11 | 3.75/5 | 4.52/5 |
| Vol 12 | 3.68/5 | 4.47/5 |
| Vol 13 | 3.73/5 | 4.52/5 |
| Vol 14 | 3.74/5 | 4.52/5 |
| Vol 15 | 3.76/5 | 4.51/5 |
| Vol 16 | 3.86/5 | 4.56/5 |
| Vol 17 | 4.07/5 | 4.63/5 |
| Vol 18 | 3.78/5 | 4.51/5 |
| Vol 19 | 3.92/5 | 4.57/5 |
| Vol 20 | 3.92/5 | 4.58/5 |
| Overall | 3.72/5 | 4.63/5 |