徳川慶喜
In 1868, the Tokugawa shogunate army was defeated in the battle of Toba Fushimi and the new government subsequently stripped all powers from Matsudaira Katamori and the "shōgun", Tokugawa Yoshinobu. Katamori advised Tokugawa Yoshinobu to fight, but instead received orders that he would be banned from Yoshinobu's castle and Edo. Katamori had no choice but to pull out from Edo and return to Aizuwakamatsu, the capital of the Aizu han. Teru also went to Aizu for her first time. After her arrival, she took the Buddhist tonsure and became a nun. Although Matsudaira Katamori followed the example of the "shōgun" Tokugawa Yoshinobu and put himself under house arrest, it soon became evident that the new government had no intentions of seeking a peaceful resolution. This eventually led to the Aizu War and the siege of Aizuwakamatsu Castle (Tsuruga Castle).