Happy Birthday
Happy Birthday
| Total doujinshi | 31 |
|---|---|
| Total tags | 132 |
| Total circles | 31 |
| Total artists | 32 |
| Total contents | 4 |
| Total series | 36 |
| Total characters | 1 |
| Total conventions | 0 |
| Total collections | 0 |
| Average price | ¥ 632 |
| Average page count | 25 |
| Original : Parody ratio |