1girl, ahoge, arm_support, bangs, blush, bow, breasts, chestnut_mouth, dated, eyebrows_visible_through_hair, frilled_skirt, frills, gloves, hair_between_eyes, hair_bow, hair_intakes, hair_ornament, hairclip, happy_valentine, holding, holding_pen, long_hair, looking_at_viewer, medium_breasts, monochrome, neckerchief, parted_lips, pen, pleated_skirt, puffy_short_sleeves, puffy_sleeves, sailor_collar, school_uniform, serafuku, shirt, short_sleeves, sitting, skirt, solo, thighhighs, valentine, very_long_hair, white_background