[2] After Kidani graduated from Musashi University with a degree in economics, he worked at Yamaichi Securities.

At first, his business focused on event management, but from 1994 to 1998, he started Comic Castle for dōjinshi.

He founded Bushiroad in May 2007 as a company that produces card games and assumed the position of president.

The origin of the name Bushiroad comes from the failure to make Neppu Kairiku Bushi Road into a film due to various reasons when he led the project in the days of Broccoli.

The company would create numerous media franchises including Tantei Opera Milky Holmes and BanG Dream!.