1boy, 3girls, a.i. voice, audience, black dress, black gloves, character print, concert, dress, dual persona, faceless, faceless female, faceless male, gloves, gold trim, grey shirt, grin, hair ornament, hairclip, half gloves, hand on own chest, headphones, holding penlight, multiple girls, music, neck ribbon, open mouth, outstretched arm, penlight, pty, purple eyes, purple hair, purple ribbon, ribbon, sailor collar, school uniform, shawl, shirt, short hair, short sleeves, singing, single sidelock, smile, standing, star (symbol), star print, towel, towel around neck, truss, vocaloid, voiceroid, white sailor collar, yuzuki yukari, yuzuki yukari (rei), yuzuki yukari (shizuku)