Katsura infiltrates the Shinsengumi in a bid to take it down from the inside, but he finds he has an unexpected foe to deal with.
so it's impossible for you to 
become talkative overnight.
لذا من المستحيل أن تصبح كثير الكلام بين ليلة وضحاها
então não tem como virar tagarela
 da noite para o dia.