Generally, the accepted history is that Tokugawa Ieyasu (the Eastern Army), who won the Battle of Sekigahara in 1600, was appointed Seii Taishogun in 1603 and established the Edo shogunate. However, there is intense debate surrounding the traditional view that he solidified his power by defeating Toyotomi Hideyori (the Western Army) in the Winter Siege of Osaka in 1614 and the Summer Siege of Osaka in 1615. These two books meticulously organize and examine the points of contention, offering a compelling read. Book: Debate "The Siege of Osaka" Author: Kazuhiko Kasaya Price: 1815 yen (tax included) Published: October 20, 2025 Publisher: Shinchosha Publishing Co., Ltd. Book: Debate "The Battle of Sekigahara" Author: Kazuhiko Kasaya Price: 1650 yen (tax included) Published: July 25, 2022 Publisher: Shinchosha Publishing Co., Ltd. The books are in good condition without markings or writing, but please understand that they are used and may have some damage to the obi (paper band).