https://idolmaster-official.jp/news/01_16427
https://x.com/KamizuruCosmo/status/1952690264830574630

Come watch Cosmo's birthday live on 9/12 19 JST. The fancy goods set will come with a rubber mat featuring art that Cosmo drew herself.

https://asobistage.asobistore.jp/event/valiv_bd2025_cosmo/ticket