Waltraute-san no Konkatsu Jijou

is a Japanese light novel series written by Kazuma Kamachi, with illustrations by Nagiryo. The series began publication on September 10, 2012 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Waltraute, a blonde blue-eyed war maiden with a divine beauty, and a human boy who fell in love with her at first sight.

Actually, both of them are adorable, but one is a super "back" girl whose head is too stiff in a strange direction, and the other is a girl who does not think ahead, but for some reason it settles down to a good feeling. It was a couple called a "natural" boy.

The delightful people who live in the heavenly Asgard ── the god Odin, his wife Frigg, the fertility god Freyja, and the evil god Loki, etc., could not have been silently watching over the fate of these two super troublesome people. !?

Can the two safely lead a peaceful newlywed life? For that purpose, let alone the conflict between the gods and the giants, even Ragnarok will be blown away !?

The Circumstance Leading to a Simple Killer Princess's Marriage Was A Certain Magical Heavy Zashiki Warashi
The volume was Kazuma Kamachi's 10th Anniversary Special Novel. The universal timeline takes place in is the Norse World of Valtruate-san no Konkatsu Jijou. A Crossover between Kazuma Kamachi's various light novel series including: 'A Certain Magical Index', 'Heavy Object', 'Zashiki Warashi of Intelli Village', 'Simple Series', 'The Circumstances Leading to Waltruate's Marriage' and 'Murder Princess and Deep End'