1girl, ahoge, bare_legs, bikini, blush, embarrassed, genderswap, genderswap_(mtf), kneeling, long_hair, looking_at_viewer, magari_(c0rn3r), navel, onii-chan_wa_oshimai!, oyama_mahiro, ribbon, ribbon-trimmed_swimsuit, ribbon_trim, sailor_bikini, sailor_collar, sandals, solo, swimsuit, toes, twintails, v, yellow_ribbon