1girl, bikini, bob_cut, breasts, cellphone, collarbone, copyright_name, front-tie_bikini_top, front-tie_top, grey_background, gridman_universe, groin, hair_between_eyes, hand_on_own_stomach, kasumi_saika, large_breasts, legs_together, long_bangs, lying, navel, phone, pink_eyes, purple_hair, raised_eyebrows, shinjou_akane, side-tie_bikini_bottom, signature, smartphone, smile, solo, ssss.gridman, stomach, swimsuit, teeth, thighs, underboob, undone_bikini, white_bikini