| #2 |  ハピネス 1
| 3.92 | 14 reads | |
| #3 |  ハピネス 2
| 3.8 | 13 reads | |
| #4 |  ハピネス 3
| 4.17 | 20 reads | |
| #5 |  ハピネス 4
| 4.33 | 20 reads | |
| #6 |  Happiness, Vol. 6
| 4.07 | 19 reads | |
| #7 |  Happiness, Vol. 7
| 3.96 | 15 reads | |
| #8 |  Happiness, Vol. 8
| 3.91 | 14 reads | |
| #9 |  Happiness, Vol. 9
| 3.8 | 13 reads | |
| #10 |  Happiness, Vol. 10 Happiness, Vol. 10
| 4.2 | 13 reads |