According to a theory, after deciding the promotion of Iemitsu to the shogun post, Ieyasu was shot to death, while hunting with a hawk, by someone belonging to the group, including, Sugen-in, who tried to promote Tadanaga to the shogun post.
一説には家光の擁立を決めた家康は、崇源院ら忠長擁立派により鷹狩の最中に狙撃されたといわれる。