Sacred Souls: Genesis - Chapter 5 - BOSS (Please recommend! Please bookmark!)

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.

Jin Runcandel is the youngest son of the greatest Swordmaster. After he gets himself kicked out of their clan, he meets a tragic fate…but before he dies, a God gives him a second chance. Now he must use his new power for good.

An immortal cultivator is murdered by her master and finds herself reborn in the strange world of One Piece. She hardens her resolve to once more tread the path of cultivation, only to find it won't be as easy as she thought.

Gu Yanfei was reborn.

In her last life, only after her death did she find out that she was a real daughter in a book of true and false daughters.

The original female protagonist, Fake Daughter, is the daughter of luck. She occupies a magpie’s nest and is loved by thousands of people. She is the eyeball and heart of the Gu family, stepping on her Gu Yanfei’s flesh and blood for a lifetime of honor.

In that lifetime, Gu Yanfei lived and died unclearly.

After her death, she was reincarnated into the realm of self-cultivation and became a medical practitioner. She didn’t want to, but after practicing for two hundred years, she was struck by a thunderbolt back to her previous life.

Back to the time when the true and false daughter’s life experience was revealed.

When the real daughter came back, everyone in the Hou residence laughed at her with no ink on her chest and a straw bag.

But I don’t know that Gu Yanfei is now a full-level rebirth!

- Description from novelbuddy