Mash-up Anime World: Creating the SCP Foundation to Contain Anomalies - Chapter 15: Conquering the Laboratory – A Time-Jumping Ability User

Once she crossed through, she actually became the disfavored third WangFei?

High school student Mikoshiba Ryouma was summoned to a different world in the middle of a war. Sensing the malice from the one who summoned him (a summoner of the O’ltormea empire), he uses his martial arts to run away, killing important people of the empire during his escape. After the escape, he rescues two twin sisters from the hands of thieves. The sisters who can use magic, swear to serve him as subordinates. Thus, Ryouma begins his journey on the path of the supreme ruler.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

Yu Li and her boyfriend had known each other for four years and had been together for three. They were deeply in love.Her boyfriend was gentle and considerate. Apart from being a little too clingy, lacking a sense of security, and always dragging her to watch horror movies, he had no other flaws. They were about to get married when a car accident took both their lives.After death, she transmigrated into a book.The good news? Her boyfriend transmigrated too.The bad news? He lost his memory.The even worse news? Some entity calling itself a “system” told her that her boyfriend was originally the villain of this world.And not just any villain—he was a twisted, obsessive, and deeply dark antagonist, completely fixated on the female lead.This world operated on eerie, supernatural rules. The protagonists would be pulled into horror movie scenarios at night to complete survival missions. If their performance scores were too low, their lives would be at risk.And her little boyfriend was already teetering on the edge of danger.Yu Li fell silent.Amnesia, transmigration, and an infinite flow survival game.Now that’s what you call stacking buffs.—The first time she entered a horror scenario, she became the neighbor of the protagonist group. When the male and female leads came over for a visit, her gaze landed on the second-floor window of the house across the street, and she silently curled her lips into a smile.That night, a mu*derous ghost who had claimed countless lives turned into a wisp of smoke and slipped into her home, lying gently beside her. Lowering its head, it inhaled her scent like an addict, utterly intoxicated.“You smell so good… I want to eat you up… So good…”