Connection as said by the artist: https://x.com/nakamasa21/status/1874421460514840941

これは鳴潮(WutheringWaves)というゲームのツバキの衣装です
海外の方だと『？』となったと思いますが、日本語版のツバキの声優さんはベータと一緒なので、それに託けて描いちゃいました☺️💦

This is Camellya's outfit from the game Wuthering Waves.
I imagine overseas players might be thinking “?”, but Camellya's Japanese voice actress is the same as Beta's, so I drew her in reference to that. ☺️💦