1girl, ass, bikini, black bikini, black hair, blue archive, breasts, butt crack, cleavage, hair ornament, hamita (rikopin ika), large breasts, long hair, looking at viewer, official alternate costume, ponytail, red eyes, sandals, side-tie bikini bottom, sitting, solo, swimsuit, tsurugi (blue archive), tsurugi (swimsuit) (blue archive), very long hair, wariza