4화: 키쿠마루가 하이가의 카이를 상대로 실버 스텝을 시연하며 싱글스 2에서 경기를 펼친다

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Kikumaru plays Singles 2 against Kai from Higa. During the game, it is shown how hard Kikumaru had trained to raise his stamina. His lateral movement has improved so much that it looks like there are two Kikumarus. This motion is called Seal Step, and it looks as if he has a doppelganger. (Source: Wikipedia)