2girls, blue hair, blue serafuku, blush, bow, bow hairband, closed eyes, dress, hair ornament, hair ribbon, hairband, halo, hand on another's shoulder, holding, holding microphone, long hair, long sleeves, microphone, multicolored clothes, multicolored dress, multiple girls, music, open mouth, ribbon, sailor collar, school uniform, serafuku, short hair, singing, skirt, sleeveless, sleeveless dress, twintails, water, white bow, white hairband, white sailor collar, white skirt