Fafnir his foster-son Sigurd to kill the dragon. Regin instructed Sigurd to dig a pit in which he could lie in wait under the trail Fáfnir used to get to a stream and there plunge his sword, Gram, into Fafnir's heart as he crawls over the pit to the water. Regin then ran away in fear, leaving Sigurd to the task. As Sigurd dug, Odin appeared in the form of an old man with a long beard, advising the warrior to dig more trenches for the blood of Fafnir to run into, presumably so that Sigurd does not drown in the
Unlimited Fafnir Afternoon" from March 2014 to December 2015. As of March 7, 2016 the series is complete with four "tankōbon" volumes. An anime television series adaptation by Diomedéa aired from January 9, 2015 to March 26, 2015. The opening theme is "Flying fafnir", created and performed by trustrick, while the ending theme is "Ray of bullet" by Rina Hidaka and Manami Numakura voice actresses of anime heroines Iris Freyja and Mitsuki Mononobe respectively from episodes 1-12 though episode 12 was sung together with Hisako Kanemoto, Sora Tokui, Fumiko Uchimura and Ayane Sakura who are also voice actresses of Lisa Highwalker, Ariella