In order to strengthen relations with the Mitsui Clan, the Toyota Family has continuously engaged in interfamily marriages with them.
To put it simply, the first president of Toyota, Toyota Risaburo, although he bore the name Toyota, was actually a member of the Mitsui Clan.
Back then, the Mitsui Clan had him marry into the Toyota Family, becoming the first president of Toyota.
Then, Toyota Kiichiro, the founder of Toyota and the second president, married Mitsui Hiroko from the Mitsui Clan.
Toyota Shigeichiro's only son, also the fourth-generation head of the Toyota Family and the father of Toyota Osamu, married the daughter of the vice president of Mitsui & Co., Ltd.
Therefore, it was assumed that if Toyota Osamu were to inherit the position in the future, he should also marry a daughter from the Mitsui Clan or a daughter from the Mitsui Conglomerate's top management.
But Toyota Osamu did not do this.
