Stamps can be used to communicate with other players in Virtual Live shows and during Co-op Lives.
![](http://static.miraheze.org/projectsekaiwiki/thumb/f/f7/Free_stamp.png/300px-Free_stamp.png)
Players are initially given a set of automatically unlocked stamps that include all the VIRTUAL SINGER unit members, as well as one member of each other unit.
![](http://static.miraheze.org/projectsekaiwiki/thumb/f/fa/Stamp_shop.png/300px-Stamp_shop.png)
More stamps can be obtained via various methods, such as:
- Purchasing a stamp from the Stamp Shop using a stamp exchange ticket.
- Purchasing the [Crystal Shop Limited] Stamp Set with paid crystals
- Attending Virtual Lives
- Upgrading a character's Character Rank
- Upgrading a Kizuna Rank