Oujo no Yuigon 4 - Garland Oukoku Hiwa
| Volume Title | Oujo no Yuigon 4 - Garland Oukoku Hiwa |
| Japanese Volume Title | 王女の遺言 4 ガーランド王国秘話 |
| Light Novel | Oujo no Yuigon - Garland Oukoku Hiwa |
| Publisher | Shueisha |
| Light Novel Label | Shueisha Orange Bunko |
| Author | Rise Kuga |
| Illustrator | Kyouko Negishi |
| Target Readership | Female |
| Volume | 4 |
| Release Date | January 20, 2022 |
| Pages | 368 |
| ISBN-10 | 4086804298 |
| ISBN-13 | 978-4086804295 |
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