
its a misunderstanding. the prayer he said after they had sex in the cave was actually marriage vows. so he married fl without her knowing. he considers her his wife. and since they did it so many times, he thinks shes pregnant now (even tho she cant get pregnant)
thus, the misunderstanding of him being married with a child on the way

she cant because the blond priest fed her something to stop her from the forest's "practice". turns out the "practice" is a orgy rape thing. he loves fl so he wont let anyone sleep with her and yet he makes fl watch him have sex with other women. the blond priest is disgusting and doesnt deserve to be the second ml
but in the side story:
fl is cured of her infertility and kun and fl have 4 kids
Can someone give me spoiler if they will end up together or they will become happy in the end. Thank you