Haikei, Jyuunengo no Kimi e.
| Volume Title | Haikei, Jyuunengo no Kimi e. |
| Japanese Volume Title | 拝啓、十年後の君へ。 |
| Light Novel | Haikei, Jyuunengo no Kimi e. |
| Publisher | ASCII Media Works |
| Light Novel Label | Media Works Bunko |
| Author | Natsuki Amasawa |
| Illustrator | loundraw |
| Release Date | June 25, 2016 |
| Pages | 322 |
| ISBN-10 | 4048922076 |
| ISBN-13 | 978-4048922074 |
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