Series: Blue Archive - Happ Birtday (backscratcher777)

Artist: backscratcher777
Original title: 誕生日
Series: https://www.pixiv.net/user/11172868/series/341132

블루아카 학생들 생일 시리즈 [글로벌]
ブルーアーカイブ生徒誕生日シリーズ【グローバル】
Blue Archive Student Birthday Series [Global]