2girls, arm_support, backlighting, bed, black_hair, blue_eyes, blue_one-piece_swimsuit, bob_cut, breasts, bright_pupils, clenched_hand, closed_mouth, collarbone, competition_school_swimsuit, covered_navel, curtains, day, doppelganger, dual_persona, e_(eokiba), expressionless, feet_out_of_frame, head_tilt, indoors, kneeling, kofune_mio, legs, light_blush, looking_at_viewer, medium_hair, multiple_girls, on_bed, one-piece_swimsuit, school_swimsuit, shadow_mio, short_hair, sitting, small_breasts, smile, straight_hair, summertime_render, sunlight, swimsuit, white_pupils, window