Circlet Girl 4
| Volume Title | Circlet Girl 4 |
| Japanese Volume Title | 円環少女 (4) よるべなき鉄槌 |
| Light Novel | Circlet Girl |
| Publisher | Kadokawa Shoten |
| Light Novel Label | Kadokawa Sneaker Bunko |
| Author | Satoshi Hase |
| Illustrator | Miyuu |
| Target Readership | Male |
| Volume | 4 |
| Release Date | October 31, 2006 |
| Pages | 317 |
| ISBN-10 | 4044267065 |
| ISBN-13 | 978-4044267063 |
| Height (cm) | 14.80 |
| Width (cm) | 10.60 |
| Thickness (cm) | 1.40 |
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