Infinite Career Evolution: I Have a Vampiric Demoness

Beneath the calm routines of city life, demons and monsters surround the world. Supernatural practitioners from different traditions battle endlessly, all hoping to spread their own way and conquer the world…

Shane, a transmigrator, finds an unparalleled beauty on a rainy night. He thinks she's an ordinary person, but it turns out she's not even human...

She's also a bit of a yandere...

Fortunately, he has a Demon Profession System that lets him gain powers from demons and monsters. He won't be a useless husband.

He discovers the [Blood Knight] profession from a vampire.

He discovers the [Pleasure Envoy] profession from a succubus.

He discovers the [Strongman] profession from a bull demon.

He discovers the [Ranger] profession from a leopard demon.

With a clear path ahead, he proceeds cautiously, one step at a time, until

[The Blood Knight looks down on the poor, honest Strongman, so he grabs him and refines him in an instant.]

[The Blood Knight] actually devoured [the Strongman]!

The two combine, triggering a strange transformation...

In the end, he takes on an unlimited number of professions and evolves without limit, becoming the God of Professions… Only then does he come to his senses and say with an innocent look:

"I really never meant to conquer the world!"