Worldwide Beasttaming: I Can Design Evolution Lines - Chapter 441 - : Returning to Earth, the World of the Seven Demon Gods!

After a mishap, he accidentally became the protagonist. Unexpectedly, he and the villain cultivated together and they actually became dao companions.

“If you want to be with me forever, there is only the supreme road of achievement. Are you willing to travel with me?”

“Of course I’m willing.”

……

In Li JinZhi’s view, the protagonist and villain’s coexistence should be like swords and spears facing each other, a feud.

But when he crossed into the novel and became the protagonist; when he placed all his trust in the man who was supposed to be the villain; when the other side revealed some unusual feelings to him; when he held Ye Yu’s hand to the altar, he discovered that the relationship between the protagonist and villain isn’t as dull as he imagined.

When the monotonous pattern is broken, the feelings of resentment turns into sharing a common destiny.

- 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.

Su Jie, capable of traveling between Blue Star and the Cultivation World, discovered that cultivation was just too difficult.Spirit Pills, Magic Artifacts, Pocket Worlds, and inherent comprehension—each was a mountain on the long road to immortality.Not until Su Jie found out that Demon Cultivators refined corpses by killing, extracted souls to cultivate fiends, and used fear as sustenance for their cultivation.Need souls to consecrate a Soul Summoning Banner? Get to know the pig farms that slaughter millions of pigs a year.Need human fear to cultivate fierce ghosts? Stock up on ghost houses, horror films, and horror games…Need fresh blood for Demon Techniques? Across the ocean, America is the world’s largest grey market blood transfusion station………Years later.“You devil, how many people have you killed? And you still have the face to call yourself a good person? Pah, today I shall act on behalf of heaven to mete out justice.”The Tianyuan World’s most beautiful person’s eyebrows were furrowed with rage, as she stared at the terrifying Devil before her, enveloped in wronged souls, with thousands of ghosts parading on his Soul Banner, seated in a palace made of bones, she posed her soulful question.The Devil slowly stood up and pulled out a business card that read “Hua Country’s Philanthropist of the Year / Founder of the World’s Largest Chain of Ghost Houses / Owner of Blue Star’s Largest Livestock Slaughter Business / Emerging Tycoon of the Entertainment Industry.”“You see, I’m really not a devil, okay? Nowadays, who still uses such a lowly method as killing people to cultivate as a devil!”

The worst and strongest villain.I became the narrow-eyed character Arsene Adel.“Revenge.”It sounded good.At least to the original owner of the body.But from my point of view, the goal is not revenge, but survival.I didn’t have the confidence to survive among humans, soㅡI went to the Demon Realm.Where I was headed,A school for demons that is said to be attended by the children of prestigious families in the demon world,……It was a school that terrorized the human world.