Save a Failed Idol's Life - Chapter 250:

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.

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.

Kurogami Ichiro was desperate because he couldn’t achieve what he wanted when he once started his martial arts path at age of 8!

After being married and in love for five years, everyone praised the Third Imperial Concubine as both virtuous and magnanimous for her willingness to accept all of her husband’s beautiful concubines. However, behind her back, they mocked her for being a useless woman who hadn’t borne any children for her husband yet.

After reincarnating and returning to the harem, Xiao Wan decided to be ruthlessly tyrannical and not be lenient to those who offended her. She would stay on her guard and find a new husband.

However, can someone tell her who this shameless man was? He was formerly the most honorable yixing1 prince in Dong Ming. However, he tossed aside his kingship to become a merchant and quickly became the wealthiest person in Dong Ming.

1 Prince who has a different last name from the Emperor. He is not a prince belonging to the Emperor’s clan.

- Description from Novelupdates