I opened a shop on the Astral Train - Chapter 56

“Compared to our time, the current generation just aren’t as reliable” they said, “Still, isn’t he the son of the Hero?” How annoying.

It’s been over ten years since the battle between mankind and the demons ended. The children of the heroes who saved the world are all grown up.

One of them, Earth, was a talented man, and everyone expected him to succeed his father as a warrior and defend his country, but Earth was always wary of his father’s title.

One day, Earth is shocked to find his father’s sword, which was used to overthrow the Demon King, sealed in his family’s mansion.

Because trapped within was the ghost of the Great Demon King who was unable to pass on and continued to roam the world.

For some reason, only he could see the spirit of the Demon King, and the Demon King possessed him through the sword.

Every day, forced to coexist with the spirit of the Demon King, they live a strange shared life, when the Demon King whispers to Earth on a whim.

“I have a grudge against your father. If you want to get back at your father and the world, I’ll train you. I’m free.”

Earth receives special personal guidance from the Demon King just to get back at his parents and the world.

Then, in the coming days. The hero’s parents, the heroes of the past, the first love, the princess childhood friend, the geniuses of the era, and the world will tremble.

Qin Fei: “Sorry, fried silkworm cocoons are sold out.”
Miaojiang Yanshi seriously face: “Can gold silkworm cocoon be fried?”
——
Qin Fei: “The octopus is also sold out.”
The Octopus demon is calm and stretches out one leg: “just take it.”
——
Qin Feihan Yan: “Do you still have some clams?”
The diners with children were so scared that they lost their faces and fled.
——
There is a snack bar in the outside world.
There is no high-priced egg fried rice here.
No more expensive exaggerated ingredients,
Only delicious street food,
But it does not prevent it from conquering one after another picky taste buds.
[The text is more than a daily comparison, experience life. 】

- Description from Uukanshu translation

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

After suddenly dying while trying to meet a deadline, Gu Huai transmigrated and became a non-human race.

This race is cruel and cold, making them feared and shunned by everyone in the interstellar world.

As the new king of the race and facing the group of parents who see him as a baby, Gu Huai said he was under a lot of pressure.

- Description from Novelupdates