As the Minor Gay Love Rival in Het Novels - Chapter 5.4

Kaelen Dragonyx, a boy who lost both his parents and his mentor in the most ruthless way possible, decided in his heart to become the strongest swordsman in the world to protect the last remaining family he had, which is the only child of his mentor and his childhood friend.But along the line, he discovered that he is the most talentless boy of the generation which made his road towards being the strongest swordsman to be much further away and daunting than he could imagine. Be he didn't give up until he stumbled upon a sword that drastically changed his fate.

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

I became the fiancé of the tyrant male lead, a character who becomes a villainess because she was obsessed with the beautiful tyrant.

Of course, in the end, she was killed by the tyrant.

Still, this all happened before the original story began.

After diligently performing a dozen or so actions that would cause me to be dumped by him, I succeeded in becoming a sound friend of the tyrant, who turned out better than I had thought.

“How was it?” asked the female lead, who he saw for the first time.

“Hmm?”

“I meant your meeting with Miss Diel (female lead), Your Majesty.”

He tilted his head slightly. Hey, don’t pretend you aren’t interested.

It is said that he fell in love at first sight, but I saw it all.

Hehe. I chuckled and poked his arm with my finger.

“You know what? Please let me know if you have someone you like.”

“Why? So you can kill her?”

Heh, do you think I’m like you?

I smiled sincerely and answered him. “Well, I’ll break off our engagement at the right time.”

“Miss.”

The smile on his face disappeared in an instant.

I somehow became speechless after my gaze met his glaring eyes.

He stared at me and laughed quietly in a slightly husky voice. In a subdued voice, he then said, “Don’t make a joke like that.”

His hand stealthily and gently brushed off the strand of hair on my cheek.

When I read the development of the heroine getting stolen away, I left a malicious comment to the author.

But then I woke up later, and I’m now the villain who is supposed to steal the heroine.