Hyakuren no Haou to Seiyaku Anime:
The anime series, being directed by Kosuke Kobayashi and written by Natsuko Takahashi, is animated by EMT Squared Studio. The anime paces too fast and confuses the viewers in understanding the plot. More time should’ve been given to the backstory of how Yuuto got into Yggdrasil and how he became the leader of the wolf clan. Overall, this anime will surely be enjoyed by Isekai fans.
Einherjar Light Novel:
The Master of Ragnarok and Blesser of Einherjar light novel is written by Seiichi Takayama and illustrated by Yuki-san. The Art of the novel is quite amazing. The story is a bit hastened.
The backstory of characters opens up not before the 3rd volume. Overall, you’re sure to enjoy reading this novel if you’re an Isekai and Harem fan!