I am loving this old man, he's surrounded by by young beauties. He reminds me of the old British slap stick comedy "Are you Being Served". Which is pretty apt seeing as this episode is filled to the brim with innuendos. I love how Sora just randomly drops current day mathematical jargon like everyone know what she's talking about, though they bring up present day references themselves that no Edo period commoner should or could know. It's a nice and solid episode wink, wink with stakes so not just a regular ole filler episode.