Birdie Num Num
Straw Hat Pirate
So the way I see it, Kuon is really the never island Rinne and normal island Rinne is Setsuna's Daughter. It makes sense why Kuon would ask if they had sex now. They still did stuff.. Dad of the year?
This is something that really annoys me about anime but wasn't as prevalent (in mainstream anime) in the past. I think a lot of people who make anime are under the impression that it doesn't matter if you're not blood related, but these days it doesn't seem to matter if you are. I expect these people haven't actually got siblings though...because...you know? BleughI guess that's why they never actually kiss in the opportunities that they had in this episode because the writers knew that might weird a lot of people out when the truth was revealed.