TPJ-028、"Rumia/Humanity has Adopted the Decimal System"「ルーミア/人類は十進法を採用しました」
| Card type | Character |
| Card name | Rumia/Humanity has Adopted the Decimal System |
| Cost | 2 |
| Team | Gensokyo |
| Visible / Hidden | Hidden only |
| Flight | |
| ATK | 2 |
| DEF | 3 |
| Card text | Reservist |
| Rumia and characters in combat with Rumia cannot be the target of effects. | |
| Opposing characters can attack Rumia as if she is a visible character. | |
| Card number | TPJ-028 |