Nice seeing the ancestors of our main cast. Rasho, we all know of, he appeared on the main story, and if this was 100 years ago then that means he was close to 120 years old when Sarasa (not Sasara, c'mon guys) met him.
Raizo is the great-grandson of Tenmanya and Iris, so he does have foreign blood running in his veins, that's why he has that exotic look compared to the other people from where he lives.
Asahiko could maybe be an ancestor of Masunaga or Tamon, but what's interesting here is that we got to know he was the one that swapped the old Genbu sword for the bamboo one.
The only thing that's weird is that Tara looks a lot like Sarasa, but she's actually a relative of Shuri, and Gensho and Yukiko are the great-grandparents of Sarasa and Tatara.... I thought that was bit of nonsense, but whatever.
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And there's was also the Summer Kohaku Singing Challenge, so funny seeing the characters as idols and band members, lol