2girls, alternate costume, baseball cap, black hair, blue eyes, blue hair, blush, buttons, cellphone, closed mouth, collarbone, halo, hat, long hair, looking at viewer, mask, midriff, mouth mask, multicolored hair, multiple girls, navel, phone, pink eyes, pink hair, sailor collar, school uniform, serafuku, simple background, sketch, smartphone, smile, surgical mask, two-tone hair, waving, white background