The Misfit of Demon King Academy II Episode 1

"You've gone out of your way to challenge me in this peaceful era. You better have come prepared."

- Anos to Ziek Ozma

A Lesson by God (神の授業) is the first episode of The Misfit of Demon King Academy II anime series.

Synopsis
Erdomaid Dittijohn, one of the four evil royals, has appeared before Anos as a teacher at Demon King Academy. Not only that, he claims himself to be the Heavenly Father God Nousgalia, and that the new "Child of God" who will vanquish the Demon King of Tyranny is also at the Demon King Academy. The "Misfit" who overcomes all odds sets off to a new battle!

Summary
Two thousand years ago, Anos saved Reno from the Heavenly Father God Nousgalia, who wanted her to bear the "Child of God". To protect her as she travels to Delsgade, Anos leaves his right-hand man Shin with her. After Anos' sacrifice, the two travel back to Aharthern, but find it under attack by the Divine Beast Gwen. Reno is attacked from behind, but a boy named Anoshu Polticoal saves her.

In the present, Anos' class is introduced to Erdomaid Dittijohn, one of the legendary Four Evil Royals, and their new homeroom teacher. He makes it very clear that Anos is the real Demon King of Tyranny, upsetting the royal students. Anos is aware that he is possessed by Nousgalia but lets him be nonetheless.

The Heavenly Father teaches the class about the Goddess of Destruction Abernyu, whose power was taken and turned into Venuzdonoa by Anos. Because this disrupted order, the gods decided to create the "Child of God" to destroy him. He also reveals that this entity is already in the academy. The royal students don't believe him, so Nousgalia uses magic to choke them. Anos summons Venuzdonoa to kill him, and resurrects him with only 10% of his source, as permanently killing Nousgalia would leave the world without order and destroy it.

Anos' group then split into three to find the "Child of God". Eleonore and Zeshia meet with the heroes from the Hero Academy, but find them poisoned. Lay and Misa are approached by a student claiming to be a subordinate of her father. Sasha and Misha discover that Menou Historia was kidnapped. When Anos goes to check with Melheis Boran, he finds him dead. The perpetrators are the direct subordinates of the Four Evil Royals.

Adaptation Notes
Differences from the light novel:
 * Nousgalia's introduction in the anime is more violent, being heralded by a pair of explosions that blow away the Tithi. In the novel, he just appears from beyond the fog while the Tithi flee.
 * The Arc 4 prologue is extended greatly. It includes a montage of Reno and Shin's journey to Delsgade, Anos' sacrifice, and the former two's return to Aharthern. It is followed by their encounter with Anoshu Polticoal, which doesn't happen until later in the arc.
 * In the anime, Anoshu reveals himself to protect Reno. But in the novel, he reveals himself because Reno can sense everyone in the Great Spirit Forest.
 * In the novel, Erdomaid Dittijohn wears white robes during his debut, a particular color that informs the royal students that he isn't of pureblood. In the anime, he wears similar clothes as Menou Historia, thus the royal students shouldn't know about his social status.