Most people should have bought on the actual event but it looks like we have merch data for Vspo
https://store.vspo.jp/products/school-festival2023-shirtVspo Cultural Sports Festival Cultural Festival Class T-shirt
花芽すみれ/Sumire 103 ¥4,000.00 ¥412,000.00
花芽なずな/Nazuna 11 ¥4,000.00 ¥44,000.00
小雀とと/Toto 22 ¥4,000.00 ¥88,000.00
一ノ瀬うるは/Uruha 259 ¥4,000.00 ¥1,036,000.00
胡桃のあ/Noah 70 ¥4,000.00 ¥280,000.00
兎咲ミミ/Mimi 142 ¥4,000.00 ¥568,000.00
空澄セナ/Sena 78 ¥4,000.00 ¥312,000.00
橘ひなの/Hinano 126 ¥4,000.00 ¥504,000.00
英リサ/Lisa 31 ¥4,000.00 ¥124,000.00
如月れん/Ren 37 ¥4,000.00 ¥148,000.00
神成きゅぴ/Qpi 25 ¥4,000.00 ¥100,000.00
八雲べに/Beni 57 ¥4,000.00 ¥228,000.00
藍沢エマ/Ema 132 ¥4,000.00 ¥528,000.00
紫宮るな/Runa 127 ¥4,000.00 ¥508,000.00
猫汰つな/Tsuna 59 ¥4,000.00 ¥236,000.00
白波らむね/Ramune 36 ¥4,000.00 ¥144,000.00
小森めと/Met 118 ¥4,000.00 ¥472,000.00
夢野あかり/Akari 6 ¥4,000.00 ¥24,000.00
¥5,756,000.00