"Milan are a legend, it's a dream come true," Honda told the Milan Channel television station on his arrival at the city's airport ahead of his official presentation on Wednesday.
"I know the situation, I know that everyone is expecting a lot from me," Honda added. "For my part, I believe I can do something special. I am confident."
The 27-year-old midfielder, who will be crucial to Japan's hopes at the FIFA World Cup™ later this year, spent three years in Moscow before agreeing a deal with Milan which will take him through to June 2017.
He will wear the No10 shirt at the Italian giants who are currently just five points off the relegation places in Serie A.