Kazuhiro Kitase has spent years slipping into the same recurring dream, a fantasy world where he adventures alongside an elf named Mariabelle, until a dragon kills them both mid-dream and he wakes to find her asleep beside him in the real world. This light novel, serialized first on the Shousetsuka ni Narou web-novel site, is the original source for the Nihon e Youkoso Elf-san manga, tracking the same dream-world bond from Kazuhiro's own telling.