Rule 34 Dev - 1boy alternate_costume artist_name basil_(faraway)_(omori) basil_(omori) blonde_hair blue_eyes blush chibi chibi_only envelope highres holding holding_envelope long_sleeves looking_at_viewer mailbag mailman male_focus omori one_eye_closed open_mouth shirotsume_143 short_hair simple_background smile solo white_background|23429028402