Michiki was born in Nagasaki Prefecture on 25 August 1973. After graduating from high school, he joined Sanfrecce Hiroshima in 1992. He mainly played as left side-back. The club won the 2nd place at 1995 and 1996 Emperor's Cup. Although he moved to Yokohama Marinos (later Yokohama F. Marinos) in 1998, his opportunity to play decreased. He moved to Urawa Reds in 1999. In 2003, although he moved to Vissel Kobe in January, he resigned in February. Although he signed with Oita Trinita in April, he resigned in June.
On 13 October 1996, he debuted for Japan national team against Tunisia. He was selected Japan for 1996 Asian Cup in December, but he did not play in the match. He played 4 games for Japan until 1997.[1]
