| Original title | ひみつのへや |
| Romanized title | Himitsunoheya |
| Release date | 2020-11-29 |
| Price | ¥ 1182 |
| Pages | 120 |
| Adult Content | Yes |
| Anthology | No |
| Copybook | No |
| Novel | Yes |
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| Created at | 2020-12-14 09:07:20 |
| Updated at | 2020-12-14 09:07:20 |
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