“WATER BLUE NEW WORLD”高海 千歌 is a Weiß Schwarz card from 「ラブライブ!サンシャイン!!」Vol.2 LSS/W53-043. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【CONT】 This card gets +500 power for each of your other 《Music》 characters.