In the away match against Kanto University RFC, where Keio won the qualification to the National High School Rugby Football Championship.
As result of the seeding, held in the following day, after the victory of the title in the National High School Championship, Ikuta won the right to participate to the Japan students' national team.
After graduating from Keio University, Ikuta started to play for Mitsubishi Motors, although he was not involved in the National Rugby Company Championship, but he was later called up in the Japanese national team.
In 1987, he was in the 1987 Rugby World Cup roster, he played against USA, at Brisbane and against Australia, at Sydney.
However, after the appearance at the World Cup, he retired as professional rugby player, later, playing only tournaments between Waseda, Keio and Meiji.