| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.18/5 | 4.31/5 |
| Vol 2 | 3.11/5 | 4.25/5 |
| Vol 3 | 3.09/5 | 4.21/5 |
| Vol 4 | 3.22/5 | 4.41/5 |
| Vol 5 | 3.09/5 | 4.34/5 |
| Vol 6 | 3.13/5 | 4.24/5 |
| Vol 7 | 3.01/5 | 4.33/5 |
| Vol 8 | 2.93/5 | 4.14/5 |
| Vol 9 | 3.21/5 | 4.38/5 |
| Vol 10 | 2.88/5 | 4.20/5 |
| Vol 11 | 2.89/5 | 4.30/5 |
| Vol 12 | 3.25/5 | 4.37/5 |
| Vol 13 | 2.55/5 | 3.92/5 |
| Vol 14 | 2.87/5 | 4.24/5 |
| Vol 15 | 2.88/5 | 4.14/5 |
| Vol 16 | 2.46/5 | 3.87/5 |
| Vol 17 | 2.97/5 | 4.12/5 |
| Vol 18 | 3.15/5 | 4.28/5 |
| Vol 19 | 3.27/5 | 4.28/5 |
| Vol 20 | 3.16/5 | 4.24/5 |
| Vol 21 | 3.30/5 | 4.37/5 |
| Vol 22 | 3.25/5 | 4.35/5 |
| Vol 23 | 3.15/5 | 4.29/5 |
| Overall | 3.04/5 | 4.41/5 |