tyrzul, hasumi (blue archive), hasumi (swimsuit) (blue archive), blue archive, highres, 1girl, all fours, ass, bikini, black bikini, black choker, black hair, black wings, blush, breasts, choker, closed mouth, day, from behind, hair between eyes, hair bun, halo, huge breasts, long hair, looking at viewer, looking back, low wings, official alternate costume, outdoors, red eyes, red halo, side-tie bikini bottom, single hair bun, skindentation, solo, swimsuit, thigh strap, thighs, underboob, water, wet, wings