The Approximation of the Distance of Two
| Volume Title | The Approximation of the Distance of Two |
| Japanese Volume Title | ふたりの距離の概算 |
| Light Novel | Classic Club Series |
| Publisher | Kadokawa Shoten |
| Release Date | June 25, 2010 |
| Pages | 253 |
| ISBN-10 | 404874075X |
| ISBN-13 | 978-4048740753 |
| Height (cm) | 19.00 |
| Width (cm) | 12.60 |
| Thickness (cm) | 2.20 |
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