| Name | Empty Envelope |
| Rarity |  | |
| Description | Obtained upon first daily login or after consuming any Battery Charge. Can be used in the “Wish Post Office” event. | |
| Description | The cost-efficient Cunning Hares somehow got their hands on such sturdy bottles from who knows where. The wishes stored inside them probably won’t be eroded by time, even after drifting on the ocean for ages. |
idk about Promeia synergy, but i plan to use her with Nangong Yu (or Vivian sometimes) and Yuzuha.