Kenji Osano, who was a chief executive operator in Kokusai Kogyo Group, invested into Yamanashi Kotsu and became a parent company of that.

In 2009, Kokusai Kogyo transferred all their owned shares to Yamanashi Kotsu employee because Kokusai Kogyo got acquired by Cerberus Capital Management from Osano Family.

Yamako (山交百貨店) had been a department store company in Yamanashi Prefecture, Japan until 30 September 2019.

[2] And, since 30 September 2019, the company has specialized in managing parking areas and properties.

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