2boys, aida_yuuya, akamura_shouma, animal_ears, black_jacket, black_necktie, black_pants, blush, cake, cake_slice, chibi, collared_shirt, food, happy_birthday, jacket, long_sleeves, looking_at_viewer, male_focus, multiple_boys, natsumoriii, necktie, ookami_game_(studio_wasabi), open_mouth, pants, pink_eyes, rabbit_boy, rabbit_ears, rabbit_tail, red_hair, shirt, tail, white_hair, yellow_shirt