Discuss the occupation of the kotatsu?

Marie said:

They like the same guy... That's yuri.

I'm not sure that's how that works?

Surreal comedy aside I want riyoverse Kadoc/Anastasia to work out. They feel closer to human beings than anybody except possibly Goredolf.

Edax said:

Discuss the occupation of the kotatsu?

Everyone treats her kotatsu as if it's their own in previous comic strips

I think Marie's punchline is referring back to what Osakabe-hime says in the first panel, specifically the term 百合談義 (yuri dangi). Is this an idiom? Neither "lesbian discussion" nor literal "lily discussion" seem to make sense in context.

Hime really shook the hornet's nest by pretending to hit on Kadoc here.