MTL - The Girl in the Iron Cage: Lazy Little Beast Fei - Chapter 37 Bird's Nest

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

Three thousand years ago, gods and Buddhas disappeared all over the sky, and the inheritance of practice was broken. It was not until the ancient civilization was destroyed that spiritual energy recovered. Ten thousand races took advantage of this to invade.

Five hundred years later, the human race gradually rose up and began to fight for control of the land of China, and counterattacked all races.

Three hundred years later, Fang Yi, the Lord of the Great Dao, slaughtered all clans, destroyed all the heavens, stepped out of the myriad realms, and fought against the Dao of Heaven.

In desperation, Fang Yi sacrificed blood to eight hundred small worlds, reversed time and space, and was reborn nineteen years old.

In this life, he wants to live a more relaxed life, perfect his Dao Xin, and conquer the Dao of Heaven again.

- Description from novelbuddy

Only a pure maiden can have a privilege to make contract with a spirit.

In Areishia Acadamy, maidens from noble family were gathered there, giving them an elite education to become a spirit contractor. A boy Kamito, by accident he peeped on a girl, Clair, who was taking a bath, and he even made a contract with spirit that she wanted.

Kamito was actually an irregular male spirit contractor, which should not exist.

“When the old gods are forgotten, they do not die—they wait.”In the year 1025, the Viking Age wanes.Iceland bows to Christ. The Althing governs by law. And the gods of old fade to whispers.But in the far Westfjords, something stirs.Vetrulfr, a former Varangian captain and exile, returns from the East with foreign gold, forgotten warcraft, and a hunger no man can name.He comes not in peace, but to raise Ullrsfjörðr from ash and ice; building walls, carving runes, and waging war on behalf of a dying faith.From Reykjavík to Aachen, rumors spread: a ghost walks the North once more. Some call him the son of Ullr. Others, a wolf-cloaked demon.But all will know his name.and when the Valkyries call, he will answer.