2koma 30_minutes_sisters 4girls ass black_leotard blue_eyes blue_hair brown_hair busou_shinki comic crossed_arms crossover frame_arms_girl grey_hair headpat holding humanoid_robot juden-kun kotobuki_bukiko leaning_forward leotard low_twintails multiple_crossover multiple_girls pomock ponytail rishetta_(30ms) robot sankuma short_hair stylet surprised tail top-down_bottom-up twintails two_side_up