The Frugal Mage - Chapter 7: Escorts

Ye Lingchen flips through the “Book of Mathematics”, then solves the world’s ten most difficult problems.

Ye Lingchen flips through the “Book of Language and Literature”, then creates the world’s ten most famous books.

Ye Lingchen flips through “The Art of Acting”, then becomes the king of the silver screen.

Ye Lingchen flips through “Military Boxing”, then becomes invincible.

Ye Lingchen flips through the “Book of Changes”, damn, he ascended to immortality…

- Description from Novelupdates

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.

Inescapable fate ends here. Only Gilded Ashes remain.[FREE 50 CHAPTERS BEFORE LOCK]When shadows devour his home, Raizen is left with nothing but grief - and a vow to hunt down and kill every Nyx. At his side stands Hikari, a mysterious girl with no past but a dark fate she cannot escape.From the ashes of loss to The Underworks, to the halls of Neoshima's Lotus Academy - assassins, wardens, hidden enemies, unexpected traitors and all sorts of rivals will test them at every step. Secrets stir, powers awaken, and the line between hope and despair blurs, making them wonder what being “human” truly means. As the darkness spreads, one truth remains:The real battle has only just begun.

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