Sairin Yuusha no Fukushuutan ~ Yuusha Yamete Moto Maou to Kumimasu ~ 4
| Volume Title | Sairin Yuusha no Fukushuutan ~ Yuusha Yamete Moto Maou to Kumimasu ~ 4 |
| Japanese Volume Title | 再臨勇者の復讐譚 勇者やめて元魔王と組みます(4) |
| Light Novel | Sairin Yuusha no Fukushuutan ~ Yuusha Yamete Moto Maou to Kumimasu ~ |
| Publisher | Futabasha |
| Light Novel Label | Monster Bunko |
| Author | Usagi Usaki |
| Illustrator | Shirako Miso |
| Target Readership | Male |
| Volume | 4 |
| Release Date | August 30, 2017 |
| Pages | 392 |
| ISBN-10 | 4575751561 |
| ISBN-13 | 978-4575751567 |
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