Baka to Test to Shoukanjuu‎ - Volume 7, The Sixth Question

Song Xi, the proprietress of the supermarket in the 21st century, wakes up and finds that she has come to a time when supplies are scarce and extremely difficult, and she has ‘married’ into a mountain valley where the conditions are extremely difficult.

Unexpectedly, the supermarket opened in a small town became her personal space, and the husband beside her was an excellent man who could hunt, fish and farm.

Song Xi felt that being a low-key rich man with a loving husband, two or three confidantes, endless fruits and vegetables, and living a small life was pretty good.

[Farming] + [Gourmet]

- Description from novelbuddy

The consciousness of a Great Magus suddenly returned to his original body on earth, just before he transmigrated into the magic world.

Nothing has changed, it's still the same earth.

However, when he looked at earth once more as a former great magus, he discovered earth was not as simple as he knew it to be.

Hidden magus, legendary races such as vampires and werewolves, they do exist, ruling the world through the shadows.

Faced with a former great magus, who possessed as many spells as libraries, would the earth that had been ruled by a few people be able to remain calm?

"What you do in life, Echoes in Eternity."

The System, who goes by the code name, Thirteen, defied the System God in order to give his previous Hosts’ the chance to change their Fates.

Unfortunately, he was killed by his Father, the System God, and was sent to the world of Pangea to struggle like the Cannon Fodders that he fought so hard to protect.

Armed with his knowledge as a System, Thirteen vowed to change not only his Fate, but the Fate of others whose destinies were tied up with him.

In a world torn by power and corruption, a fallen System will bring out a symphony of change, or lead it to its destruction.