| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.82/5 | 3.85/5 |
| Vol 2 | 3.00/5 | 3.96/5 |
| Vol 3 | 3.03/5 | 3.95/5 |
| Vol 4 | 3.18/5 | 4.08/5 |
| Vol 5 | 3.19/5 | 4.04/5 |
| Vol 6 | 2.89/5 | 3.82/5 |
| Vol 7 | 3.26/5 | 4.19/5 |
| Vol 8 | 3.11/5 | 4.08/5 |
| Vol 9 | 3.21/5 | 4.18/5 |
| Vol 10 | 3.06/5 | 4.08/5 |
| Vol 11 | 3.14/5 | 4.04/5 |
| Vol 12 | 3.29/5 | 4.22/5 |
| Vol 13 | 3.14/5 | 4.10/5 |
| Vol 14 | 3.34/5 | 4.21/5 |
| Vol 15 | 3.33/5 | 4.19/5 |
| Vol 16 | 3.40/5 | 4.25/5 |
| Vol 17 | 3.28/5 | 4.16/5 |
| Vol 18 | 3.36/5 | 4.23/5 |
| Vol 19 | 3.64/5 | 4.33/5 |
| Overall | 3.20/5 | 4.33/5 |