Kyouran Kazoku Nikki

The destruction god Enka left a prophecy that its child would end the world. Unable to identify the true heir among several candidates, the authorities attempt an unusual safeguard: make them a family and teach them to love the world before they can destroy it.

Government official Oka becomes their assigned father, with the unruly Kyoka taking the mother's role. Their children are not all human, and their histories bring troubles no ordinary household faces. Between ridiculous domestic crises and genuine hurt, a manufactured family must discover whether belonging can outweigh a disastrous inheritance.