1boy 1girl alternate_costume animal artist_name black_hair blue_gloves brother_and_sister chameleon commentary_request copyright_logo copyright_name english_text episode_number gloves goggles green_background gun highres hockey_mask holding holding_gun holding_weapon hood hoodie knee_armor logo long_sleeves mask mecha motor_vehicle mounting muscular muscular_male pleated_skirt powered_wheelchair promotional_art riding robot science_fiction sensha_isu:_tank_chair siblings signature skin_tight skirt tahira_nagi tahira_shizuka weapon wheelchair white_gloves yashiro_manabu