rickhime38, tanaka kotoha, idolmaster, idolmaster million live!, absurdres, highres, 1girl, 1other, arms behind back, bikini, breasts, chair, collarbone, cuffs, fellatio, food, food in mouth, greyscale, hairband, handcuffs, holding, holding food, holding popsicle, long hair, monochrome, navel, on chair, oral, popsicle, popsicle in mouth, sexually suggestive, side-tie bikini bottom, simulated fellatio, sitting, sleep mask, solo focus, straight hair, string bikini, sweat, swimsuit