Career
Generally, he is called Aiuchi Kaichō (相内会長). He is from Yoichi, Hokkaido. He was promoted to a professional at the age of 21.
In Japan, he is recognized as one of the best snowboarders at ground-tricks, commonly called "buttering" in the west.
He acted as a chairperson of Tesuri-Kyōkai (手摺狂会) until 2006. He and his teammate, Hirohisa Sato have both made appearances in many books
Now, he works with a small Japanese snowboarding brand called "011 Artistic".