Kongō Gumi seems no longer independent though. > In January 2006, after falling on difficult times, it became a subsidiary of the Takamatsu Construction Group.

Kongō Gumi seems no longer independent though. > In January 2006, after falling on difficult times, it became a subsidiary of the Takamatsu Construction Group. https://en.m.wikipedia.org/wiki/Kongō_Gumi https://en.m.wikipedia.org/wiki/Kongō_Gumi