The Seventh Sign -Mr. Sister-
| Relation | Nekogami-sama to, Nanatsuboshi -Imouto no Ane- |
| Title | The Seventh Sign -Mr. Sister- |
| Language | English Japanese Chinese (traditional) |
| Publication | Non-free |
| Platform |  Windows |
| Medium | Internet download |
| Voiced | Fully voiced |
| Released | 2022-01-18 |
| Age rating | 18+ |
| Erotic content | Contains erotic scenes with optical censoring |
| Publisher | Denpasoft |
| Links | Denpasoft |