1girl, arm_up, armpits, blush, breasts, cleavage, collarbone, collared_shirt, hand_in_own_hair, holding, holding_pen, knee_up, large_breasts, long_hair, monochrome, open_mouth, original, panties, pen, sage_joh, shirt, short_sleeves, sitting, skirt, smile, solo, thighs, underwear