| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.79/5 | 4.45/5 |
| Vol 2 | 3.96/5 | 4.50/5 |
| Vol 3 | 3.73/5 | 4.42/5 |
| Vol 4 | 3.83/5 | 4.46/5 |
| Vol 5 | 3.63/5 | 4.39/5 |
| Vol 6 | 3.59/5 | 4.37/5 |
| Vol 7 | 3.83/5 | 4.46/5 |
| Vol 8 | 3.97/5 | 4.51/5 |
| Vol 9 | 3.87/5 | 4.47/5 |
| Vol 10 | 3.72/5 | 4.42/5 |
| Vol 11 | 3.86/5 | 4.47/5 |
| Vol 12 | 3.88/5 | 4.48/5 |
| Vol 13 | 3.67/5 | 4.41/5 |
| Vol 14 | 3.77/5 | 4.45/5 |
| Overall | 3.79/5 | 4.51/5 |