Free Roaming Thenours: "Enter the southwest building, enter the southeast building, enter the north building (palace) interact with the paintings above the girl."
The only southwest building I found, which would prompt a conversation, is the bar (of sorts) but that's already included in the "Orcent bar talk" portion of this section. I've tried to enter every house in the rest side of Ryoken, and I don't think I've missed anything (although it's always a possibility) but the only pieces of dialogue I found was the aforementioned bar talk and two conversations (one with the ninja who was part of Estevan's harem and one with the past MWAF member wearing blue armor in the west room) in the northwest building with the two...tengu? (I think) statues in front.
Also, and this is utterly trivial, Finiry Finery.