Atsuhime is Born - S1.E9

Okatsu is being trained to be a full-fledged princess by Ikushima, a tutor brought in from the Konoe family in Kyoto while Nariakira renames Okatsu as "Atsuko" and officially begins her life as "Atsu-hime." Meanwhile in Edo, Ieyoshi, the 12th shogun of the Tokugawa shogunate, suddenly dies and his son Iesachi, who is known to be benighted, is to succeed. Nariakira confides his secret to Ikushima why he wishes to rush the training of Atsu-hime.