| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.67/5 | 3.70/5 |
| Vol 2 | 2.71/5 | 3.70/5 |
| Vol 3 | 2.79/5 | 3.84/5 |
| Vol 4 | 2.61/5 | 3.89/5 |
| Vol 5 | 2.78/5 | 3.83/5 |
| Vol 6 | 2.79/5 | 3.85/5 |
| Vol 7 | 2.70/5 | 3.83/5 |
| Vol 8 | 2.64/5 | 3.83/5 |
| Vol 9 | 2.70/5 | 3.96/5 |
| Vol 10 | 2.82/5 | 3.87/5 |
| Vol 11 | 2.61/5 | 3.74/5 |
| Vol 12 | 2.80/5 | 3.95/5 |
| Vol 13 | 2.78/5 | 3.96/5 |
| Vol 14 | 2.71/5 | 3.91/5 |
| Vol 15 | 2.68/5 | 3.88/5 |
| Vol 16 | 2.71/5 | 3.97/5 |
| Vol 17 | 3.02/5 | 4.19/5 |
| Vol 18 | 2.66/5 | 3.93/5 |
| Overall | 2.73/5 | 4.19/5 |