1girl, ahoge, asakura_toru, beach, bikini, bikini_under_clothes, black_bikini, blurry, blurry_background, breasts, cardigan, cardigan_around_waist, clothes_around_waist, day, earrings, halterneck, idolmaster, idolmaster_shiny_colors, jewelry, koya_(koya_x_00), large_breasts, lens_flare, looking_at_viewer, looking_back, outdoors, parted_lips, purple_hair, school_uniform, shirt, sideboob, signature, single_bare_shoulder, solo, stud_earrings, swimsuit, upper_body, white_shirt