Rakuin no Monshou - Volume 2, Chapter 2: Days at the Imperial Capital

Teela married King Heavenly because she loved him, but life in the Heavenly household was anything but euphoric. Lettie, her hard-as-nails mother-in-law, treats her like an unpaid servant. The family treats her like an outsider. King treats her like a shadow, transparent and forgettable.When Lettie presses Teela to prove her value to the family or get out, Teela has a decision to make. But she’s not leaving without a fight.King Heavenly rules Heavenly Industries with an iron fist, but he leaves his home life to his mother to manage, and that includes the management of his boring little wife. Teela has never complained. She’s never done anything interesting, for that matter. She’s just one more responsibility in a long line of responsibilities that King shoulders on a daily basis, and that is exactly how he treats her — as a responsibility that he’s delegated to his mother.Suddenly Teela steps out of the shadows and into a fight with him and his whole family, and King is baffled by the ruthless actions of his now daring wife. He’d always heard that vengeance is a dish best served cold, but Teela is coming in hot!

This story is about a rookie researcher, who was forcefully dragged away from his restful life, compelled into facing various killers and zombies, always having to risk his life at the brink of death, and finally becoming an advanced researcher that is acclaimed by all. And throughout his adventure, he met an alluring(?) killing machine, who he started to have fantasies on after they had an accidental kiss…

Xiao Yan: Did I fall for him? But he’s a man!

Maya: Who knows…. maybe it’s the other way round?

- Description from Novelupdates

The main character is suddenly summoned to another world…..and the one who shows up next is a malicious and scheming noble…..obey or die. I’ll try to rise in this world and live on by any means! It’s the story of such a hero.