1girl, arms_up, ass_visible_through_thighs, bare_legs, bare_shoulders, barefoot, bikini, black_hair, blue_bikini, blue_eyes, blush, breasts, breasts_apart, collarbone, covered_nipples, dungeon_ni_deai_wo_motomeru_no_wa_machigatteiru_darou_ka, feet_out_of_frame, full-face_blush, hestia_(danmachi), knee_up, large_breasts, long_hair, looking_at_viewer, lying, multi-strapped_bikini, navel, on_back, open_mouth, smile, solo, sonao, strap_gap, swimsuit, twintails, untied_bikini, very_long_hair