Yoshinobu, along with Nariaki and the Chief of Fukui-han Clan, Yoshinaga MATSUDAIRA, made an unexpected visit to the [Edo-jo] castle and closely interrogated Naosuke, but in tern, he was questioned on his offense of making an unexpected visit to the castle; he was ordered to retire and was given a disciplinary confinement in the following year (1859) (Ansei Purge).
慶喜は斉昭、福井藩主・松平慶永らと共に不時登城し直弼を詰問するが、逆に不時登城の罪を問われ、翌・安政6年（1859年）に隠居謹慎処分となる（安政の大獄）。