1girl, arm_support, blue_eyes, blue_hair, blue_sailor_collar, blue_skirt, blue_sky, branch, closed_mouth, cloud, day, feet_out_of_frame, flower, long_hair, looking_away, mochizuki_shiina, navel, neckerchief, original, outdoors, paper_airplane, pleated_skirt, sailor_collar, school_uniform, serafuku, shirt, short_sleeves, skirt, sky, smile, solo, very_long_hair, water_drop, white_flower, white_neckerchief, white_shirt