The Circumstances Leading to Waltraute's Marriage by Kazuma Kamachi

Translated from Japanese Comedy Fantasy Romance Adventure Gods Supernatural
In the world of Norse mythology, a human boy falls in love with Waltraute, the fourth Valkyrie sister. He wishes to marry her, but Waltraute gives him an impossible challenge to deter him.
Nevertheless, the boy is determined to carry out the dangerous task and to marry Waltraute afterwards.

Alternative names : Waltraute-san no Konkatsu Jijou

1: The Circumstances Leading to Waltraute's Marriage