“I have learned Russian and would like to serve as a bridge between our countries’ space communities,” Kimiya Yui said during a news conference in Star City outside Moscow.
Last year Kimiya Yui spent 142 days on board the International Space Station with his Russian and American colleagues.
Kimiya Yui said that the successful docking of a Japanese cargo ship with the space outpost with the help of a robotic arm was “forever etched” in his memory.
Expedition 45 flight engineers Oleg Kononenko of the Russian Federal Space Agency, Kjell Lindgren of NASA and Kimiya Yui of the Japan Aerospace Exploration Agency landed in Kazakhstan in December 2015.
Their return wrapped up 142 days in space since their launch in late July.