MTL - From Becoming the Master of Monsters - Chapter 15 Rat chaos is over, alarmed upper floors

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.

Accidentally entered an ABO novel, and before Mu Er realized that he had an extra organ, he was confused and completed the first great harmony in his life with an Omega.
But when he woke up, the man had disappeared, and Mu Er thought it was just a dream.
Unexpectedly, a few months later, when Jiyou was pointing at the handsome face of the man in the news to her excitedly praising the most outstanding Omega on the planet, she was suddenly tied to that man.
Mu Er was nervous and puzzled, she asked, “Sir, you…”
The man unbuttoned his suit, pointed at his slightly long belly, his face flushed, and he said to her, “responsible.”

(Privately set like a mountain) (O pet A) (Mines clearance: the author’s female lead)
One sentence introduction: Mr. Ba came to me with the ball to take charge
Purpose: Life is precious, and we must be responsible for it.

Content tags: childbirth sweet text through books
Search keywords: protagonist: ┃ supporting role: ┃ others:

- Description from novelbuddy

The story is about a man whose compulsive tendencies make it impossible for him to keep a job, and a young girl who skips school and loves insects. The two meet, come to support each other in reintegrating into society, and fall in love. There’s a problem, however: namely, the parasites in their heads.