An Unexpected Marriage - S1.E17

The marriage of Atsu-hime and Iesada is finalized and the Satsuma clan's castle is in a celebratory mood. Meanwhile in Satsuma, Naogoro is to serve under Nariakira in Edo. Only a few months later, Nariakira orders Naogoro back to Satsuma to marry Ochika, who is from a distinguished family of Satsuma clan and a younger sister of Komatsu Kiyomichi, who died of illness, to succeed the Komatsu family. After Naogoro leaves Edo, a big earthquake hits Edo.