Villainess is being pampered by her beast husbands - Chapter 43 --

The war of gods left the earth no winners, but a broken world.

The youngest Wiseman of the continent, Chu Tian, has traveled 30,000 years back in time to the age of antiquity due to an accident.

This is a prosperous era. Rare herbs, minerals, treasure relics and monsters can be easily found throughout the land.

However, this is also an undeveloped era. Communications, traffic, martial arts and technology are in its early stage of development. Prosperous cities lack lighting while its citizens are uneducated.

Our decisive MC using his future knowledge creates Magic powered light bulbs, magic powered telephones, magic powered cannons, magic powered computers, artificial intelligence, psyche internet. 30,000 years worth of knowledge allows him to create miracles and shine brightly in this era. Allowing him to conquer the land and sit firmly on the throne of the 10 realms.

- Description from Novelupdates

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.

One week before the destruction of the earth, Xiao Yu fused his soul with the main computer of an interstellar spacecraft, and fled before the destruction of the earth.

After the integration with the computer, Xiao Yu possessed the powerful computing power of the computer, but also possessed powerful innovation and exploration capabilities as a human being. As a result, the humble interstellar spacecraft in which Xiao Yu lived began to continuously evolve from a chemical engine to a nuclear power engine, and from a nuclear power engine to a positive and negative material annihilation engine. The volume and mass also began to increase. Big.

With the continuous development of science and technology, Xiao Yu also began to try to build a true interstellar super fleet that integrates attack, defense, exploration, landing, and acquisition …

- Description from Uukanshu