MTL - Black Bellied Husband’s Indulgence: His Wife is not Allowed to Hide - Chapter 12 The boss of the JS group ...

She, a modern hidden ghost leader of an organization which gathered insane prodigies proficient in the various differing skill-sets. Highly skilled in medicine and poison, executes covert assassinations, viewed as insane and demonic in the eyes of people of the world. Killed in an accident, and reborn into the body of a disfigured young girl.

What? Face disfigured, identity stolen? A return to the family dim and hopeless? Her identity can be given up, her family can be forgone, but as for the one who harmed her predecessor who inhabited this same body, if she didn’t at least make them scream in unimaginable agony and throw them into a state of wretchedness, how could she live up to her demonic reputation? Endless turmoil ensues and it’s a battle to dominate over all! See how she shook the world dressed in a suit of red, her sword up against the dominant powers that rocked the Heavens! Her name spread across the seas, shocking the earth!

- 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.

At 20 years old, Su He married Mr. Jiang, a business tycoon with billions to his name, proudly hailed as a business mogul. Upon learning of this, people said that she, a country bumpkin lacking background and wealth, was merely a poor doctor with a beautiful appearance, unworthy of the esteemed Jiang family head. Gradually, however, people discovered that this 'poor doctor' with 'no background' was in fact the jewel of a prestigious medical family in the capital, an expert surgeon in the medical field, an heir to a medical research institute, and a mysterious designer... Everyone knew that within Mr. Jiang's heart, there was a cherished figure. As the four-year marriage agreement neared its end, the man handed her a document, his tone gentle yet assertive: 'Sign it!' 'A divorce agreement?' Su He asked, her eyes bright with unconcealed excitement and anticipation, having longed for a divorce. The man snorted coldly, 'Just sign it!' Not long after, Mr. Jiang reneged, stating: 'Since you've given birth to my child, you'll be mine for life!'

Ye Beibei was unprepared for a while, and she married Young Master Gu who was sitting in a wheelchair.

I thought that from then on, I would have lived a career as a wealthy man, rich and free, but I never knew I was enslaved every day to become a nanny.

Ye Beibei beat the table: Liar, I want a divorce!

Young Master Gu pushed a cute baby to his front: You still want to get a divorce even when we already have a child? Wife, you wake up!

“…” Ye Beibei looked at a cute baby, who was exactly like her, with a confused expression.

Who can tell her when she gave birth! ?

- Description from MTL