As the Minor Gay Love Rival in Het Novels - Chapter 5.3

Mimizuku, a small girl with chains on her wrists and ankles and the numbers “332” branded onto her forehead, wanders into the Forest of Night seeking to be eaten by a monster. However, when the ruler of the monsters, the mysterious and beautiful “King of Night,” refuses to eat her, she tries to formulate a way to convince him otherwise.

Odelia Grace, a beautiful and smart woman, a secretary of a big company, had to give up the career she had at a young age for a marriage with the CEO of another company, Vincent Percy.The marriage was filled with love and support for each other for 4 years. However, they did not have a child.Vincent's family became furious, and continued to demand and pressure Odelia. A beautiful marriage turned into a nightmare because of their abuse.“You barren woman! My son is jinxed because of you, he shouldn't have married you in the first place!” snapped her mother-in-law.Until one day, Odelia was kicked out of her own house and went to a hotel for the night. She accidentally met a man who was drunk.Unintentionally, there was a hot night between the two of them.And after that night, Odelia finally realized that she was not barren and that she was carrying a baby.The baby of her ex-husband's enemy, Sean Osbert.

My wife betrayed me, but little did she know that I awakened the Immortal Emperor's inheritance, and from then on, I embarked on an extraordinary life against the heavens, embracing a top-tier beauty in my arms...

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.