1girl, bell, black_eyes, black_hair, blowing_kiss, bra, choker, christmas, full_body, girls_und_panzer, gloves, hat, holding, holding_sack, looking_at_viewer, matsui_yasutsugu, one-hour_drawing_challenge, one_eye_closed, pink_bra, pink_footwear, ribbon, sack, santa_costume, santa_hat, shorts, signature, simple_background, solo, starry_background, underwear, utsugi_yuuki