zhihuigugudegezi, ako (blue archive), ako (dress) (blue archive), blue archive, absurdres, highres, 1girl, backless dress, backless outfit, bare arms, bare back, bare shoulders, blue eyes, blue hair, blue halo, blush, bracelet, breasts, closed mouth, dress, from behind, halo, jewelry, large breasts, long hair, multiple bracelets, official alternate costume, sideboob, sleeveless, sleeveless dress, smile, solo