1girl alternate_costume arm_behind_head arm_support arm_up bangs bikini black_bikini black_hair black_wings blue_archive blush breasts hair_between_eyes halo hand_in_own_hair hasumi_(blue_archive) highres huge_breasts long_bangs long_hair mole mole_under_eye nanao_(naoekaki25) navel parted_lips red_eyes sideboob simple_background sitting solo stomach swimsuit thighs very_long_hair white_background wings