The next year (1860) he raced over into Satsuma Domain with his comrade to advocate the expulsion of foreigners, as a result of which he was seized and confined at the Mito Domain estate in Edo.
翌、万延元年（1860年）には同志とともに攘夷を訴えるため、薩摩藩に駆け込み、これがもとで、水戸藩江戸屋敷において謹慎処分を受ける。