Toaru Hikuushi he no Seiyaku 4
| Volume Title | Toaru Hikuushi he no Seiyaku 4 |
| Japanese Volume Title | とある飛空士への誓約4 |
| Light Novel | Toaru Hikuushi e no Seiyaku |
| Publisher | Shogakukan |
| Light Novel Label | Gagaga Bunko |
| Author | Koroku Inumura |
| Illustrator | Haruyuki Morisawa |
| Target Readership | Male |
| Volume | 4 |
| Release Date | December 18, 2013 |
| Pages | 280 |
| ISBN-10 | 4094514597 |
| ISBN-13 | 978-4094514599 |