Magic Bullet in Magic Land - Volume 1 Chapter 9

[The Golden Snake Sword was successfully strengthened, and the Snake Queen was summoned. ]. ?Snake Queen: Master, please tell me what you want!

[The skill ‘Evil Light Ghost Slash’ was successfully strengthened, and after summoning the ghost ghost. ]. what! female ghost? Then I’ll put you on maternity leave!

[The Yao soul suit has been strengthened successfully! ]. Um? Is this the Yao princess? Princess Yaoyao! Don’t get on me!

Zhou Han was surprised to find that the only SSS-level talent in the universe that he had awakened: infinite enhancement, was so awesome.

- Description from novelbuddy

Going for a swim, she ends up in an ancient wild Beast World and ends up being brought home by a handsome wolf.
She wants to stick to the handsome wolf, stock some salt, farm some land, look at some handsome men and grow old like that, but the handsome wolf pounces on her every day.
What? He wants her to have babies?
NO~ NO~ NO~ There is no happy ending to interspecies marriages, hurry and let go of me handsome wolf~

- Description from Novelupdates

After getting shot, Lucas, a serial killer, reincarnated into the novel world as a tragic villain with the same name, Lucas Ciffer.

Lucas Ciffer was supposed to be the Holy Kingdom's successor to the throne, but his demonic appearance and the powers he possessed terrified the entire kingdom. A white-haired boy with red eyes and pale skin, together with his dark powers, got persecuted and exiled by his own family. Not to mention that in the future he was destined to die by the hand of the hero.

Lucas fell from holiness, and, with the serial killer's bloodlust and knowledge of the future, he decided to prove the world right.

Yes. I could be a villain; no, in fact, I WILL BE THE VILLAIN.

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

- Description from Novelupdates