In the 21st century, Mitsuki's friend, Ruri, takes her to her cousin, Saya, hoping that her knowledge of mythology might help them find out more on where Yuuto is. After hearing Mitsuki's story, Saya draws several connections between the world of Yggdrasil and Norse Mythology, with Yuuto being the "Black One" Surtr, who causes the end of the world known as Ragnarok, the Wolf Clan being the "Infamous Wolf" Fenrir and the "Massive Snake" Jörmungandr, both of whom die at Ragnarok, and Steinthor being the "Thunder God" Thor...