2girls, alternate_costume, animal_ears, arknights, asymmetrical_docking, bikini, black_bikini, breast_press, breasts, cellphone, eyewear_on_head, feater_(arknights), hair_over_one_eye, hat, holding, holding_phone, kokihanada, large_breasts, long_bangs, multiple_girls, navel, phone, selfie, shirt, simple_background, straw_hat, sunglasses, sweat, swimsuit, tail, taking_picture, tied_shirt, utage_(arknights), white_background