Global Lord: My Unit Commander is Vampire Queen - Chapter 13: Lair Evolution Initiated

Wang Yi gets a key, opening a door in 2022 will lead to 1982, and opening a door in 1982 will return to 2022.

Two very different great eras appeared before him:

Abundant dietary protection, developed industrial products, miraculous medicines, and explosive information, this is 2022.

Simple folk customs, rich wild resources, scattered antiques, and treasures of the age, this is 1982.

Traveling between these two eras, Wang Yi didn’t think much of it, he just wanted to live a good life.

- Description from novelbuddy

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

No NTR-IncestA Boy struggles with the problems of being raised in a family full of lewd older women.

In the distant future, the world was in ice

Humans live in cryo facilities underground, awaiting for the distant Spring,

Robots manage the facilities

They built a ‘village’ there and lived there.

They dreamed that, one day, they would live together with the ‘Humans’ (Master).

This, is the story of the Ice Country.