Reborn as the Princess' Knight (GL) - Chapter 224 79:

Good news: You’ve transmigrated as a born protagonist , your confidants have exceptional talents, boasting abilities like Heart Voice, Simulator, Rebirth... and many other top-tier skills. What you only need to do is to wait for one of them to grow up, then you will be invincible to ascend. Bad news: They’re all yandere !!! Under the gaze of yandere, Xu Yuan shivered in fear. It was not until he was about to be attacked with a firewood cleaver. “If that’s the case, then I’m dropping the act—I am none other than the Great Love Immortal Venerable!”

Alex used to be a person with an incomplete soul and died at the age of 20 without being able to cultivate.

Mysteriously, he once again woke up in a different world, in the body of a young man with the same name, facial features, and even soul.

Yes, the other half of Alex's soul was actually born as this young man but since this young man's soul was also incomplete, just like Alex, he also couldn't practice martial arts.

After both incomplete souls fused together, a System suddenly appeared and Alex could feel a kind of connection with this system as if he himself was the creator of this system.

The System grants him the ability to see everyone's attributes and duplicate them.

Follow Alex's journey to the peak of martial arts as he'll overturn both heaven and earth and will even try to Replicate the Heavens.

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.

Zhangsun Zijun and Yi Xichen are the protagonists of the novel “Record of Nine Thousand Vicissitudes.” One is solid and reserved; the other is free-spirited and uninhibited. As fellow disciples under the same master who grew up together, the two have a deep friendship that was strengthened by their numerous life and death adventures together.

However, in a popular yaoi fanfiction, the personalities of these two characters is completely OOC. Zhangsun Zijun turned into an insanely jealous, insatiable s*x addict madly in love with his wife Yi Xichen. Yi Xichen turned into a sweet, delicate little angel. Their daily life was full of kinky bedroom activities…

Suddenly, the Zhangsun Zijun character from the fanfiction was transported into the world of the original novel.

- Description from Novelupdates