Reincarnated as a Failed Villain: Fallen Angel - Chapter 63 Arc 2 - God Of Curses, Lucas!

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.

After failing to transmigrate to a proper cultivation world, Lin Zhengran woke up to find himself as a little kid… in kindergarten.With no other choice, he decides to fool the system by pretending to cultivate.[Today, you encountered a fairy descending the mountain. You must find a way to obtain the Pure Yang Elixir in her hand.]Lin Zhengran looked at the milk candy in his childhood friend’s hand.“Give me the candy. Do you need to go to the restroom? I’ll call the teacher for you.”The little girl, confused and innocent, handed the candy to Lin Zhengran.“Here’s the candy…”[Congratulations! Without lifting a blade or striking a blow, you successfully obtained the Pure Yang Elixir from the fairy!]

I just lost myself in the deep and shallow temptation of her.
——by Jiang Hanyu
Everyone knows that the person Nan Gao doesn’t mess with is Jiang Hanyu
She is arrogant and fierce, relying on beauty, a proper little overlord in school
Everyone thinks that the best relationship with Jiang Hanyu is to call him brothers.
But one day, someone found that Jiang Hanyu was holding the hand of the goddess of coldness in the class and lowered his eyebrows after class.
Unruly girls become gentle and charming
He also said in an unbearable and irresistible voice, “Si Nian, will you give me a kiss?”
Then everyone knew that the best relationship with Jiang Hanyu was…

TIPS:
1. The Great Demon King X Miss Gao Leng
2. Campus text

- Description from novelbuddy