Naomichi Marufuji is an arm wrestler who competed in both SASUKE 13 and SASUKE 16. He wore #1 both times. In SASUKE 13, he became the first person to beat the Prism Tilt, Sandan Rolling Maruta, and Cross Bridge, but ultimately failed the new vertical Jump Hang. He returned in SASUKE 16, wearing #1 once again, and became the first person to beat the Sextuple Steps. He performed well up until he failed the Jump Hang once again (original version). It's unknown if he competed in any other tournaments.