MTL - Mermaid Effect - Chapter 1

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.

Xiang Shaoyun is the young master of an influential and powerful sect and is blessed with an extreme latent talent in martial cultivation. From talent comes confidence, and from confidence comes a declaration to give all the so-called geniuses a head start of ten years before catching up to them.

Igor had asked him to die for the world. She would ask him to die for her. Problem was, he didn't really like dying, not for a second time, at least.

After the nth time of failing a marriage meeting, Xiang Han got himself a job: good treatment, high salary, free world traveling with food provided, house provided and even a ‘lover provided’?!

At first, he thought, apart from having to travel into the body of a scum cannon fodder, a scheming fake white lotus, everything else was okay. It was only later he realized that saving the target was also a problem. His imagination was neverending, even eating a cup of ramen was seen as a way to rouse his ( target’s) interest!

Xiang Han: This target is a no-go.

Certain Target: Very good, you’ve already managed to rouse my interest.

Xiang Han: Go outside and make a left turn to the optometrist, go get your eyes healed! Additionally, this “lover provided” isn’t necessary.

A Certain Target: This is certainly necessary!

- Description from novelupdates