1girl, barefoot, bed_sheet, black_hair, blue_eyes, blush, breasts, closed_mouth, competition_swimsuit, covered_navel, gridman_universe, knee_up, long_bangs, long_hair, looking_at_viewer, medium_breasts, official_alternate_costume, one-piece_swimsuit, shiny_skin, smile, solo, ssss.gridman, swimsuit, takarada_rikka, thighs, yoo_tenchi