My Sister the Heroine, and I the Villainess - Chapter 93

This stands at the forefront of strategy guides to Life (a shitty video game)!

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

”When I tell you to proceed with Plan A, you can’t just ignore it and go with Plan B,” said the king.

I got sucked into a novel full of villains and must tame them in order to survive!