1girl, arms up, blue archive, blush, dociracira, greyscale, hair ornament, hair strand, hair tie in mouth, hairclip, hands on own head, hina (blue archive), hina (swimsuit) (blue archive), horns, long hair, looking at viewer, low wings, monochrome, mouth hold, name tag, one-piece swimsuit, school swimsuit, simple background, solo, spot color, swimsuit, very long hair, wet, wet hair, whistle, whistle around neck, wings