(i cut out somethings from my original comment) Fast forward a lot to the reveal of their father-daughter relationships. Anna finds out first by doing some research into her "father's" old adventurer days. Thats when she finds out what happened at a village and him bringing back 3 babies and retiring. She confronts her "father" and he basically is shocked she found out first and tells her the story. Of course she still loves him, and encourages him to tell the other 2. After a certain battle, he tells the other 2 and they still love him however they now recognize that he can really be a love potential since they aren't actually blood related (and we get hints of them actually loving him as a man throughout the novel).