| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.08/5 | 4.23/5 |
| Vol 2 | 3.42/5 | 4.37/5 |
| Vol 3 | 3.51/5 | 4.43/5 |
| Vol 4 | 3.53/5 | 4.43/5 |
| Vol 5 | 3.41/5 | 4.31/5 |
| Vol 6 | 3.32/5 | 4.26/5 |
| Vol 7 | 3.37/5 | 4.29/5 |
| Vol 8 | 3.53/5 | 4.34/5 |
| Vol 9 | 3.48/5 | 4.35/5 |
| Vol 10 | 3.57/5 | 4.41/5 |
| Vol 11 | 3.40/5 | 4.35/5 |
| Vol 12 | 3.36/5 | 4.37/5 |
| Vol 13 | 3.79/5 | 4.52/5 |
| Vol 14 | 3.95/5 | 4.56/5 |
| Vol 15 | 3.44/5 | 4.34/5 |
| Vol 16 | 3.74/5 | 4.48/5 |
| Overall | 3.50/5 | 4.56/5 |