1boy :d absurdres bikini blush border bow bowtie brown_footwear brown_hair brown_shorts child dated english_text green_eyes hair_ornament hairclip happy_birthday hat head_tilt highres himeno_kanon idolmaster idolmaster_side-m jacket long_sleeves looking_at_viewer male_child neck_ribbon open_mouth outstretched_arms pantyhose pink_headwear pink_jacket pink_sailor_collar red_ribbon ribbon round_teeth sailor_collar school_uniform sekina serafuku shoes short_hair short_shorts shorts smile solo spread_arms standing standing_on_one_leg striped striped_bikini striped_bow striped_bowtie striped_ribbon swimsuit teeth upper_teeth_only white_border white_pantyhose x_hair_ornament