MTL - On Our Wedding Night, His Highness Can’t Continue His Acting After Reading My Mind! - Chapter 403 404：

In his old life, he was an assassin, invisible, efficient, and utterly alone.His only escape came from the pages of a fantasy novel, Crown of Thorns, and the character no one else seemed to understand: Lady Evelina D’Arclight, the proud and brilliant villainess fated to lose everything.After his death, he wakes up inside that very story, not as a hero, but as Cael Arden, a student at Eryndor Royal Academy. The world is just as he remembers it, right down to the woman destined to fall.But this time, he’s not a bystander.With a lifetime of deadly skills and the knowledge of what’s to come, Cael sets out to rewrite the story itself, to protect Evelina, rise through the academy’s ruthless hierarchy, and change a fate written in stone.As alliances form and secrets surface, the line between fiction and reality starts to blur.And in a world built on power and prophecy, he’ll prove that even a villainess deserves her happy ending.

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.

[Note: Male lead – Yu Luobai]The story begins with an attempt at su*cide. The newly revived female supporting role is confused. After barely surviving, she discovers that she has been transported into the role of a disposable female celebrity burdened by scandal and debt.In order to repay her debts, she decides to live frugally while relying on her status to improve her fortunes. She befriends the female lead hoping to benefit from her luck.One day, she suddenly realizes that the famous celebrity has been getting unusually close.

At some point in the 21st century, the Christian God stopped listening to the prayers of humanity. Monsters with colossal strength and endurance began to emerge and humanity entered its darkest period.