rio (blue archive), blue archive, absurdres, bilingual commentary, commentary, english commentary, highres, korean commentary, mixed-language commentary, 1girl, breast rest, breasts, closed eyes, convenient breasts, cup, disposable cup, drinking straw, drinking straw in mouth, greyscale, hair ornament, halo, happy, heart, huge breasts, long hair, monochrome, object on breast, puff of air, red halo, redcity top21, ribbed sweater, simple background, sketch, sleeves past wrists, solo, speech bubble, spoken heart, spot color, sweater, upper body, white background