Shinnosuke and an Buttman face off. The silliest 5-year-old on Earth and the perfect life form clash in a fierce battle of butts. Who will come out victorious? And will Shinnosuke and the others really be able to make it back to Earth?
オシリアンとしんのすけ。地球一おバカな5歳児と完全生命体オシリアンの壮絶なるお尻対決が今始まる。果たして勝負の行方は！？そして、しんのすけたちは本当に地球に帰れるのか！？
