Proof of Constellation Knowledge (星座の証 Seiza no Akashi, lit. Proof of Constellation) is an achievement similar to Knowledge, and awarded to idols who know how to do a Constellation Appeal and did them properly. Currently, Seira Otoshiro, Ichigo Hoshimiya, Ran Shibuki, Sora Kazesawa and Aoi Kiriya are the only idols that are known to have earned Proof of Constellation.
Known Proves[]
| Constellation | Image | First Appearance | Earned by |
|---|---|---|---|
 (さそり座 Sasori-za) |
 |
That Rocking Girl is the Dream☆Girl | Seira Otoshiro, Ichigo Hoshimiya |
 Aquarius (みずがめ座 Mizugame-za) |
 |
The Glittering Aquarius | Aoi Kiriya |