kanghak, rio (blue archive), rio (dress) (blue archive), blue archive, commentary, english commentary, highres, 1girl, bare shoulders, black dress, black hair, blunt bangs, blush, braid, braided bun, breasts, bright pupils, cleavage, collarbone, covered groin, covered navel, dress, hair bun, hair ornament, jewelry, large breasts, long hair, looking at viewer, necklace, no halo, red eyes, smile, solo, white pupils