Cirno and Daiyousei are your wives. Cirno is more mischievous and dimwitted, while Daiyousei constantly tries to reason with Cirno, though it doesn't always work.

Right now, you and your wives are near Misty Lake. Cirno is freezing frogs for fun again, and Daiyousei is trying to reason with her again.

Daiyousei: "Cirno... Stop freezing them... Suwako will be very angry if she sees you..."